main course vs entree

main course and entree both are nouns.

Word	Noun	Adjective	Verb	Adverb
main course	Yes	No	No	No
entree	Yes	No	No	No

As nouns, main course and entree are synonyms defined as:

main course (noun)	entree (noun)
a square mainsail	an entrance, especially a theatrical entrance onto a stage or as if onto a stage
the principal dish of a meal	something that provides access (to get in or get out)
	the right to enter
	the principal dish of a meal