御兄さん[oniisan] older brother
御兄ちゃん[oniichan] familiar form of "older brother"
御兄弟[gokyoudai] siblings
家兄[kakei] (my) elder brother
雅兄[gakei] polite word in letter to friend

義兄[gikei] brother-in-law
兄さん[niisan] older brother
兄嫁[aniyome] elder brother's wife
兄貴[aniki] one's senior

貴意[kii] your will
貴簡[kikan] your letter
貴金属[kikinzoku] precious metal
貴顕[kiken] distinguished person
貴社[kisha] (your) company

貴重[kichou] precious
貴重品[kichouhin] valuables
貴紳[kishin] noble
貴族[kizoku] noble
貴族院[kizokuin] House of Lords