eye vs medical center

eye and medical center both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye	Yes	No	Yes	No
medical center	Yes	No	No	No

As nouns, medical center is a hyponym of eye; that is, medical center is a word with a more specific, narrower meaning than eye:

eye (noun)	medical center (noun)
a small hole or loop (as in a needle)	the part of a city where medical facilities are centered
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

eye (verb)	medical center (verb)
look at