side order vs entremets

side order and entremets both are nouns.

Word	Noun	Adjective	Verb	Adverb
side order	Yes	No	No	No
entremets	Yes	No	No	No

As nouns, side order and entremets are synonyms defined as:

side order and entremets: a dish that is served with, but is subordinate to, a main course

Other synonyms of side order include side dish.

side order (noun)	entremets (noun)
a dish that is served with, but is subordinate to, a main course	a dish that is served with, but is subordinate to, a main course