coition vs copulation

coition and copulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
coition	Yes	No	No	No
copulation	Yes	No	No	No

As nouns, coition and copulation are synonyms defined as:

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

coition (noun)	copulation (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