anklebone vs astragalus

anklebone and astragalus both are nouns.

Word	Noun	Adjective	Verb	Adverb
anklebone	Yes	No	No	No
astragalus	Yes	No	No	No

As nouns, anklebone and astragalus are synonyms defined as:

anklebone and astragalus: the bone in the ankle that articulates with the leg bones to form the ankle joint

Other synonyms of anklebone include astragal, talus.

anklebone (noun)	astragalus (noun)
the bone in the ankle that articulates with the leg bones to form the ankle joint	the bone in the ankle that articulates with the leg bones to form the ankle joint