B2 noun /koʊˈɪn.sɪ.dəns/
Coincidence
偶然
Meaning
a remarkable occurrence of events or circumstances without apparent causal connection; chance happening
Example
It was a strange coincidence that they both wore the same dress to the party.
それは奇妙な偶然だった、彼ら二人は同じドレスを着てパーティーに行った。