intercourse vs sexual congress

intercourse and sexual congress both are nouns.

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

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

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

intercourse (noun)	sexual congress (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