intermezzo vs entr'acte

intermezzo and entr'acte both are nouns.

Word	Noun	Adjective	Verb	Adverb
intermezzo	Yes	No	No	No
entr'acte	Yes	No	No	No

As nouns, intermezzo and entr'acte are synonyms defined as:

intermezzo and entr'acte: a brief show (music or dance etc) inserted between the sections of a longer performance

Other synonyms of intermezzo include interlude.

intermezzo (noun)	entr'acte (noun)
a brief show (music or dance etc) inserted between the sections of a longer performance	a brief show (music or dance etc) inserted between the sections of a longer performance
a short piece of instrumental music composed for performance between acts of a drama or opera	the interlude between two acts of a play
a short movement coming between the major sections of a symphony