こう【孝】
⇒こうこう（孝行）彼は父母に孝を尽くしたHe was a dutiful son to his parents.／He did his best for his parents.
こうこう【孝行】
filial piety [duty]親に孝行するbe dutiful to one's parents孝行息子a dutiful [filial] son
こうしん【孝心】
filial affection; filial piety孝心の厚い息子a very devoted son
こうよう【孝養】
filial duties父母に孝養を尽くすfulfill one's duties to one's parents／care for one's parents devotedly
