N2 - 仲良しなかよし
intimate friend, bosom buddy, chum
N1 - 改良かいりょう
improvement, reform
N1 - 善良ぜんりょう
goodness, excellence, virtue
N1 - 不良ふりょう
badness, delinquent, inferiority, failure
N1 - 良好りょうこう
favorable, satisfactory
N1 - 良質りょうしつ
good quality, superior quality