sexual congress vs carnal knowledge

sexual congress and carnal knowledge both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual congress	Yes	No	No	No
carnal knowledge	Yes	No	No	No

As nouns, sexual congress and carnal knowledge are synonyms defined as:

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

Other synonyms of sexual congress include coition, coitus, copulation, intercourse, relation, sex act, sexual intercourse, sexual relation.

sexual congress (noun)	carnal knowledge (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