concurrence vs co-occurrence

concurrence and co-occurrence both are nouns.

Word	Noun	Adjective	Verb	Adverb
concurrence	Yes	No	No	No
co-occurrence	Yes	No	No	No

As nouns, concurrence and co-occurrence are synonyms defined as:

concurrence and co-occurrence: the temporal property of two things happening at the same time

Other synonyms of concurrence include coincidence, conjunction.

concurrence (noun)	co-occurrence (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	an event or situation that happens at the same time as or in connection with another
agreement of results or opinions
a state of cooperation