lens vs eye

lens and eye both are nouns.

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

lens (noun)	eye (noun)
a transparent optical device used to converge or diverge transmitted light and to form images	a small hole or loop (as in a needle)
electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons	the organ of sight
biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina	good discernment (either visually or as if visually)
(metaphor) a channel through which something can be seen or understood	attention to what is seen
	an area that is approximately central within some larger region

lens (verb)	eye (verb)
	look at