鯔背[inase] gallant
違背[ihai] violation
棄背[kihai] giving up and turning back
向背[kouhai] one's attitude
上背[uwazei] stature

側背[sokuhai] flank
団栗の背比べ[dongurinoseikurabe] having no outstanding characteristics
中肉中背[chuunikuchuuzei] medium build
中背[chuuzei] average height
二律背反[niritsuhaihan] antinomy

御馳走様でした[gochisousamadeshita] That was a delicious meal (said after meals)
御馳走様[gochisousama] word used after one has been treated (esp. used after a meal)
馳せ参じる[hasesanjiru] to hasten to join
馳走[chisou] treat
名前を馳せる[namaewohaseru] to win fame

御馳走[gochisou] feast
馳駆[chiku] dashing around on a horse
後れ馳せ[okurebase] belated
背馳[haichi] inconsistency
馳せる[haseru] to run