Boneheaded and Pigheaded

Boneheaded adjective - Not having or showing an ability to absorb ideas readily.

Pigheaded and boneheaded are semantically related. In some cases you can replace term "Pigheaded" with "Boneheaded", this adjectives are similar.

Pigheaded adjective - Sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion.

Boneheaded and pigheaded are semantically related. Sometimes you can replace term "Boneheaded" with "Pigheaded", this adjectives are similar.