"coinciding" in the verb sense
1. coincide, co-occur, cooccur
go with, fall together
2. concur, coincide
happen simultaneously
"The two events coincided"
3. coincide
be the same
"our views on this matter coincided"
"coinciding" in the adjective sense
1. coincident, coincidental, coinciding, concurrent, co-occurrent, cooccurring, simultaneous
occurring or operating at the same time
"a series of coincident events"
Source: WordNet® (An amazing lexical database of English)
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