talus vs astragalus

talus and astragalus both are nouns.

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

As nouns, talus and astragalus are synonyms defined as:

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

Other synonyms of talus include anklebone, astragal.

talus (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
a sloping mass of loose rocks at the base of a cliff