eye vs city centre

eye and city centre both are nouns.

Word	Noun	Adjective	Verb	Adverb
eye	Yes	No	Yes	No
city centre	Yes	No	No	No

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

eye (noun)	city centre (noun)
a small hole or loop (as in a needle)	the central part of a city
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)	city centre (verb)
look at