co-occurrence

nouns

an event or situation that happens at the same time as or in connection with another
accompaniment, attendant, co-occurrence, concomitant
is derived from
co-occurrent
is derived from
cooccur
the temporal property of two things happening at the same time
"the interval determining the coincidence gate is adjustable"
co-occurrence, coincidence, concurrence, conjunction
is derived from
co-occurrent