eye vs centre stage

eye and centre stage both are nouns.

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

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

eye (noun)	centre stage (noun)
a small hole or loop (as in a needle)	the central area on a theater stage
the organ of sight	a position of prominence or importance
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)	centre stage (verb)
look at