diff --git a/src/Entity/Intern.php b/src/Entity/Intern.php
index daaf428..70c8477 100644
--- a/src/Entity/Intern.php
+++ b/src/Entity/Intern.php
@@ -19,35 +19,30 @@ class Intern extends UserApp
     private ?string $resume = null;
 
     /**
-     * @var Collection<int, InternDegree>
+     * @var Collection<int, Announcement>
      */
-    #[ORM\OneToMany(targetEntity: InternDegree::class, mappedBy: 'intern')]
-    private Collection $degrees;
+    #[ORM\ManyToMany(targetEntity: Announcement::class, inversedBy: 'interns')]
+    #[ORM\JoinTable(name: 'favorites')]
+    private Collection $favorites;
 
     /**
-     * @var Collection<int, InternSkill>
+     * @var Collection<int, Announcement>
      */
-    #[ORM\OneToMany(targetEntity: InternSkill::class, mappedBy: 'intern')]
-    private Collection $skills;
-
-    /**
-     * @var Collection<int, InternApplication>
-     */
-    #[ORM\OneToMany(targetEntity: InternApplication::class, mappedBy: 'intern')]
+    #[ORM\ManyToMany(targetEntity: Announcement::class, inversedBy: 'applicants')]
+    #[ORM\JoinTable(name: 'applications')]
     private Collection $applications;
 
     /**
-     * @var Collection<int, InternFavorite>
+     * @var Collection<int, Skill>
      */
-    #[ORM\OneToMany(targetEntity: InternFavorite::class, mappedBy: 'intern')]
-    private Collection $favorites;
+    #[ORM\ManyToMany(targetEntity: Skill::class, inversedBy: 'interns')]
+    private Collection $skills;
 
     public function __construct()
     {
-        $this->degrees = new ArrayCollection();
-        $this->skills = new ArrayCollection();
-        $this->applications = new ArrayCollection();
         $this->favorites = new ArrayCollection();
+        $this->applications = new ArrayCollection();
+        $this->skills = new ArrayCollection();
     }
 
     public function getCoverLetter(): ?string
@@ -75,122 +70,74 @@ class Intern extends UserApp
     }
 
     /**
-     * @return Collection<int, InternDegree>
-     */
-    public function getDegrees(): Collection
-    {
-        return $this->degrees;
-    }
-
-    public function addDegree(InternDegree $degree): static
-    {
-        if (!$this->degrees->contains($degree)) {
-            $this->degrees->add($degree);
-            $degree->setIntern($this);
-        }
-
-        return $this;
-    }
-
-    public function removeDegree(InternDegree $degree): static
-    {
-        if ($this->degrees->removeElement($degree)) {
-            // set the owning side to null (unless already changed)
-            if ($degree->getIntern() === $this) {
-                $degree->setIntern(null);
-            }
-        }
-
-        return $this;
-    }
-
-    /**
-     * @return Collection<int, InternSkill>
-     */
-    public function getSkills(): Collection
-    {
-        return $this->skills;
-    }
-
-    public function addSkill(InternSkill $skill): static
-    {
-        if (!$this->skills->contains($skill)) {
-            $this->skills->add($skill);
-            $skill->setIntern($this);
-        }
-
-        return $this;
-    }
-
-    public function removeSkill(InternSkill $skill): static
-    {
-        if ($this->skills->removeElement($skill)) {
-            // set the owning side to null (unless already changed)
-            if ($skill->getIntern() === $this) {
-                $skill->setIntern(null);
-            }
-        }
-
-        return $this;
-    }
-
-    /**
-     * @return Collection<int, InternApplication>
-     */
-    public function getApplications(): Collection
-    {
-        return $this->applications;
-    }
-
-    public function addApplication(InternApplication $application): static
-    {
-        if (!$this->applications->contains($application)) {
-            $this->applications->add($application);
-            $application->setIntern($this);
-        }
-
-        return $this;
-    }
-
-    public function removeApplication(InternApplication $application): static
-    {
-        if ($this->applications->removeElement($application)) {
-            // set the owning side to null (unless already changed)
-            if ($application->getIntern() === $this) {
-                $application->setIntern(null);
-            }
-        }
-
-        return $this;
-    }
-
-    /**
-     * @return Collection<int, InternFavorite>
+     * @return Collection<int, Announcement>
      */
     public function getFavorites(): Collection
     {
         return $this->favorites;
     }
 
-    public function addFavorite(InternFavorite $favorite): static
+    public function addFavorite(Announcement $favorite): static
     {
         if (!$this->favorites->contains($favorite)) {
             $this->favorites->add($favorite);
-            $favorite->setIntern($this);
         }
 
         return $this;
     }
 
-    public function removeFavorite(InternFavorite $favorite): static
+    public function removeFavorite(Announcement $favorite): static
     {
-        if ($this->favorites->removeElement($favorite)) {
-            // set the owning side to null (unless already changed)
-            if ($favorite->getIntern() === $this) {
-                $favorite->setIntern(null);
-            }
+        $this->favorites->removeElement($favorite);
+
+        return $this;
+    }
+
+    /**
+     * @return Collection<int, Announcement>
+     */
+    public function getApplications(): Collection
+    {
+        return $this->applications;
+    }
+
+    public function addApplication(Announcement $application): static
+    {
+        if (!$this->applications->contains($application)) {
+            $this->applications->add($application);
         }
 
         return $this;
     }
+
+    public function removeApplication(Announcement $application): static
+    {
+        $this->applications->removeElement($application);
+
+        return $this;
+    }
+
+    /**
+     * @return Collection<int, Skill>
+     */
+    public function getSkills(): Collection
+    {
+        return $this->skills;
+    }
+
+    public function addSkill(Skill $skill): static
+    {
+        if (!$this->skills->contains($skill)) {
+            $this->skills->add($skill);
+        }
+
+        return $this;
+    }
+
+    public function removeSkill(Skill $skill): static
+    {
+        $this->skills->removeElement($skill);
+
+        return $this;
+    }
 }
diff --git a/src/Entity/Skill.php b/src/Entity/Skill.php
index 7752cfe..47bea20 100644
--- a/src/Entity/Skill.php
+++ b/src/Entity/Skill.php
@@ -19,9 +19,9 @@ class Skill
     private ?string $label = null;
 
     /**
-     * @var Collection<int, InternSkill>
+     * @var Collection<int, Intern>
      */
-    #[ORM\OneToMany(targetEntity: InternSkill::class, mappedBy: 'skill')]
+    #[ORM\ManyToMany(targetEntity: Intern::class, mappedBy: 'skills')]
     private Collection $interns;
 
     public function __construct()
@@ -47,30 +47,27 @@ class Skill
     }
 
     /**
-     * @return Collection<int, InternSkill>
+     * @return Collection<int, Intern>
      */
     public function getInterns(): Collection
     {
         return $this->interns;
     }
 
-    public function addIntern(InternSkill $intern): static
+    public function addIntern(Intern $intern): static
     {
         if (!$this->interns->contains($intern)) {
             $this->interns->add($intern);
-            $intern->setSkill($this);
+            $intern->addSkill($this);
         }
 
         return $this;
     }
 
-    public function removeIntern(InternSkill $intern): static
+    public function removeIntern(Intern $intern): static
     {
         if ($this->interns->removeElement($intern)) {
-            // set the owning side to null (unless already changed)
-            if ($intern->getSkill() === $this) {
-                $intern->setSkill(null);
-            }
+            $intern->removeSkill($this);
         }
 
         return $this;