くノ一: a kunoichi (female ninja)

(literally) a precious metal / (inorganic chemistry) a noble metal

力: strength, power

air, atmosphere / mood, atmosphere, usually with peer pressure

taboo word; forbidden word; word one does not want to hear

extended family

Alternative spelling of 工夫 (kufū): a device, scheme; dedication to spiritual improvement, especially in Zen meditation

Alternative spelling of 工夫 (kufū): to devise, come up with, contrive

tank (container) / tank (military vehicle)

title of a book or other work / theme, topic