恩が有る[ongaaru] to be in one's debt
恩を仇で返す[onwoadadekaesu] to return evil for good
恩愛[onai] kindness and affection
恩給[onkyuu] pension
恩恵[onkei] grace

恩顧[onko] favour
恩師[onshi] one's honoured teacher
恩賜[onshi] Imperial gift
恩赦[onsha] amnesty

恩恵[onkei] grace
恵み[megumi] blessing
恵む[megumu] to bless
恵沢[keitaku] blessing
恵比須[webisu] Ebisu (god of fishing and commerce)

互恵[gokei] reciprocity
最恵国待遇[saikeikokutaiguu] most favored nation
三人寄れば文殊の知恵[sanninyorebamonjunochie] two heads are better than one
慈恵[jikei] mercy and love
仁恵[jinkei] graciousness