JLPT-N3
counter for occurrences
回 かい
かいcounter for occurrencesかいふくrecovery (from illness)こんかいnowかいすうnumber of timesかいすうけんbook of ticketsかいてんrotationかいとうreplyかいしゅうcollectionかいそうforwardingかいらんcirculationかいcircuit (electric)てんかいrevolution