eye vs crystalline lens

eye and crystalline lens both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye	Yes	No	Yes	No
crystalline lens	Yes	No	No	No

eye (noun)	crystalline lens (noun)
a small hole or loop (as in a needle)	biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina
the organ of sight
good discernment (either visually or as if visually)
attention to what is seen
an area that is approximately central within some larger region

eye (verb)	crystalline lens (verb)
look at