Word

琢磨

たくま
polish (jewels); cultivation
Word

切磋琢磨

せっさたくま
cultivate one's character by studying hard; diligent application
Word

彫琢

ちょうたく
carving and polishing
Word

切磋琢磨し合う

せっさたくましあう
to work hard together; to be in a state of friendly rivalry