御三時[osanji] three-o'clock snack
三鞭酒[shanpen] champagne
球面三角法[kyuumensankakuhou] spherical trigonometry
胸三寸[munesanzun] heart
元三[ganzan] New Year's period (January 1st to 3rd)

五十三次[gojuusantsugi] the 53 Toukaidou stages
向こう三軒[mukousangen] one's next three neighbors
降三世明王[gouzanzemyouou] Trailokyavijaya Vidya-raja
再三[saisan] again and again
再三再四[saisansaishi] repeatedly

ノーベル賞[nooberushou] Nobel prize
ノーベル平和賞[nooberuheiwashou] Nobel peace prize
１等賞[ittoushou] first place prize
恩賞[onshou] reward
佳賞[kashou] approval

勧賞[kanshou] praise and encouragement
観賞[kanshou] admiration
鑑賞[kanshou] appreciation (e.g. of art)
激賞[gekishou] enthusiastic praise
懸賞[kenshou] offering prizes