OS vs eye

OS and eye both are nouns.

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

As nouns, eye is a hypernym of OS; that is, eye is a word with a broader meaning than OS:

Other hypernyms of OS include oculus, optic.

OS (noun)	eye (noun)
the left eye	a small hole or loop (as in a needle)
(computer science) software that controls the execution of computer programs and may provide various services	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

OS (verb)	eye (verb)
	look at