micro chip vs microcircuit

micro chip and microcircuit both are nouns.

Word	Noun	Adjective	Verb	Adverb
micro chip	Yes	No	No	No
microcircuit	Yes	No	No	No

micro chip (noun)	microcircuit (noun)
electronic equipment consisting of a small crystal of a silicon semiconductor fabricated to carry out a number of electronic functions in an integrated circuit	a microelectronic computer circuit incorporated into a chip or semiconductor; a whole system rather than a single component