| accompaniment | (n) an event or situation that happens at the same time as or in connection with another, Syn. attendant, concomitant, co-occurrence |
| coincide | (v) go with, fall together, See also: cooccur with, Syn. co-occur, cooccur |
| coincident | (adj) occurring or operating at the same time, Syn. concurrent, co-occurrent, simultaneous, coinciding, coincidental, cooccurring, Example: a series of coincident events |
| collocate with | (v) go or occur together, Syn. construe with, co-occur with, cooccur with, go with, Example: The word 'hot' tends to cooccur with 'cold' |
| concurrence | (n) the temporal property of two things happening at the same time, Syn. coincidence, conjunction, co-occurrence, Example: the interval determining the coincidence gate is adjustable |