lens vs figure of speech

lens and figure of speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
lens	Yes	No	No	No
figure of speech	Yes	No	No	No

lens (noun)	figure of speech (noun)
a transparent optical device used to converge or diverge transmitted light and to form images	language used in a figurative or nonliteral sense
electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina
(metaphor) a channel through which something can be seen or understood