coition vs carnal knowledge

coition and carnal knowledge both are nouns.

Word	Noun	Adjective	Verb	Adverb
coition	Yes	No	No	No
carnal knowledge	Yes	No	No	No

As nouns, coition and carnal knowledge are synonyms defined as:

coition 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

coition (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