incus vs anvil

incus and anvil both are nouns.

Word	Noun	Adjective	Verb	Adverb
incus	Yes	No	No	No
anvil	Yes	No	No	No

As nouns, incus and anvil are synonyms defined as:

incus and anvil: a small bone in the middle ear between the malleus and the stapes

incus (noun)	anvil (noun)
a small bone in the middle ear between the malleus and the stapes	a heavy block of iron or steel on which hot metals are shaped by hammering
	a small bone in the middle ear between the malleus and the stapes