cheekbone vs malar bone

cheekbone and malar bone both are nouns.

Word	Noun	Adjective	Verb	Adverb
cheekbone	Yes	No	No	No
malar bone	Yes	No	No	No

As nouns, cheekbone and malar bone are synonyms defined as:

cheekbone and malar bone: the arch of bone beneath the eye that forms the prominence of the cheek

Other synonyms of cheekbone include jugal bone, malar, os zygomaticum, zygomatic, zygomatic bone.

cheekbone (noun)	malar bone (noun)
the arch of bone beneath the eye that forms the prominence of the cheek	the arch of bone beneath the eye that forms the prominence of the cheek