astragalus vs astragal

astragalus and astragal both are nouns.

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

As nouns, astragalus and astragal are synonyms defined as:

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

Other synonyms of astragalus include anklebone, talus.

astragalus (noun)	astragal (noun)
the bone in the ankle that articulates with the leg bones to form the ankle joint	a beaded molding for edging or decorating furniture
	the bone in the ankle that articulates with the leg bones to form the ankle joint