modiolus vs cochlea

modiolus and cochlea both are nouns.

Word	Noun	Adjective	Verb	Adverb
modiolus	Yes	No	No	No
cochlea	Yes	No	No	No

modiolus (noun)	cochlea (noun)
the central conical bony pillar of the cochlea	the snail-shaped tube (in the inner ear coiled around the modiolus) where sound vibrations are converted into nerve impulses by the organ of Corti