sexual congress vs intercourse

sexual congress and intercourse both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual congress	Yes	No	No	No
intercourse	Yes	No	No	No

As nouns, sexual congress and intercourse are synonyms defined as:

sexual congress and intercourse: sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur

sexual congress (noun)	intercourse (noun)
sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur	sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
	communication between individuals