integrated circuit vs microcircuit

integrated circuit and microcircuit both are nouns.

Word	Noun	Adjective	Verb	Adverb
integrated circuit	Yes	No	No	No
microcircuit	Yes	No	No	No

As nouns, integrated circuit and microcircuit are synonyms defined as:

integrated circuit and microcircuit: a microelectronic computer circuit incorporated into a chip or semiconductor; a whole system rather than a single component

integrated circuit (noun)	microcircuit (noun)
a microelectronic computer circuit incorporated into a chip or semiconductor; a whole system rather than a single component	a microelectronic computer circuit incorporated into a chip or semiconductor; a whole system rather than a single component