eye vs lens

eye and lens both are nouns.

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

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

eye (verb)	lens (verb)
look at