concurrence vs coincidence

concurrence and coincidence both are nouns.

Word	Noun	Adjective	Verb	Adverb
concurrence	Yes	No	No	No
coincidence	Yes	No	No	No

As nouns, concurrence and coincidence are synonyms defined as:

concurrence and coincidence: the temporal property of two things happening at the same time

Other synonyms of concurrence include co-occurrence, conjunction.

concurrence (noun)	coincidence (noun)
acting together, as agents or circumstances or events	the temporal property of two things happening at the same time
the temporal property of two things happening at the same time	the quality of occupying the same position or area in space
agreement of results or opinions	an event that might have been arranged although it was really accidental
a state of cooperation