お七夜[oshichiya] name-giving ceremony
七つ[nanatsu] seven
七つの海[nanatsunoumi] the seven seas
七屋[nanatsuya] pawnshop
七回忌[shichikaiki] seventh anniversary of a death

七角形[shichikakkei] heptagon
七曲がり[nanamagari] tortuous or spiral (path)
七月[shichigatsu] July
七賢[shichiken] the Seven Wise Men (of Confucius's Analects)

御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
また明日[mataashita] see you tomorrow
旭日[kyokujitsu] rising sun
旭日昇天[kyokujitsushouten] full of vigor and vitality (like the rising sun) (vigour)
或日[aruhi] one day (e.g. "one day while studying, ..")

一日の長[ichijitsunochou] superiority
一日一日[ichinichiichinichi] gradually
一日一夜[ichinichiichiya] all day and night
一日増しに[ichinichimashini] day by day
一日置き[ichinichioki] every other day

鱘鮫[chouzame] sturgeon (Acipenser mikadoi)
鰐鮫[wanizame] ferocious shark
鮫膚[samehada] rough skin (like that of a shark)
鋸鮫[nokogirizame] saw shark (esp. the Japanese saw shark, Prietiophorus japonicus)
青鮫[aozame] shortfin mako shark (Isurus oxyrinchus)

鮫皮[samegawa] sharkskin
小判鮫[kobanzame] remora
葦切鮫[yoshikirizame] blue shark (Prionace glauca, species of circumglobal requiem shark)
角鮫[tsunozame] dogfish (any shark of family Squalidae)