interlude vs entr'acte

interlude and entr'acte both are nouns.

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

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

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

Other synonyms of interlude include intermezzo.

As nouns, entr'acte is a hyponym of interlude; that is, entr'acte is a word with a more specific, narrower meaning than interlude:

interlude (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
an intervening period or episode	the interlude between two acts of a play

interlude (verb)	entr'acte (verb)
perform an interlude