俳優【はいゆう】
actor, actress, player, performer
俳句【はいく】
haiku, 17-mora poem, usu. in 3 lines of 5, 7 and 5 morae
俳人【はいじん】
haiku poet
俳壇【はいだん】
the world of the haiku
俳諧【はいかい】
haikai (collective name for haiku, haibun, haiga, senryū, etc.), humorous or vulgar renga poetry