godan verb (-su)
call each other's names; call out to each other
Describes two or more people calling each other's names or calling out to each other, often in a lively or emotional context.
遠くから友達と名前を呼び交わした。
I called out my friend's name from afar, and they called mine back.
祭りでは、知らない人同士
At festivals, strangers sometimes call out to each other.