crystalline lens vs eye

crystalline lens and eye both are nouns.

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

crystalline lens (noun)	eye (noun)
biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina	a small hole or loop (as in a needle)
	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

crystalline lens (verb)	eye (verb)
	look at