lens vs cortex

lens and cortex both are nouns.

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

lens (noun)	cortex (noun)
a transparent optical device used to converge or diverge transmitted light and to form images	the tissue forming the outer layer of an organ or structure in plant or animal
electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons	the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina	the tissue that surrounds the lens nucleus
(metaphor) a channel through which something can be seen or understood