哪些動詞+er成為名詞?(除了worker,teacher,driver,runner,swimmer,reader,painter,singer,dancer,writer,rider,player,winner)

哪些動詞+er成為名詞?(除了worker,teacher,driver,runner,swimmer,reader,painter,singer,dancer,writer,rider,player,winner)

gardener園丁farmer農民Woodcutter樵夫waiter男服務員smoker吸烟者
singer歌手killer殺手murderer謀殺犯
thinker思想家cleaner清潔工