intercourse vs coition

intercourse and coition both are nouns.

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

As nouns, intercourse and coition are synonyms defined as:

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

intercourse (noun)	coition (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