coition vs sexual intercourse

coition and sexual intercourse both are nouns.

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

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

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

coition (noun)	sexual 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