亜属[azoku] subgenus
帰属[kizoku] belonging to
貴金属[kikinzoku] precious metal
近縁属[kinenzoku] related genera
金属[kinzoku] metal

金属間[kinzokukan] intermetallic
金属探知機[kinzokutanchiki] metal detector
軍属[gunzoku] civilian in military employ
繋属[keizoku] relationship
係属中[keizokuchuu] pending (e.g. legal case)

事前に必要[jizennihitsuyou] prerequisite
生者必滅[shoujahitsumetsu] All living things must die
絶対必要[zettaihitsuyou] absolutely necessary
必ず[kanarazu] always
必ずしも[kanarazushimo] (not) always

必ずや[kanarazuya] certainly
必携[hikkei] handbook
必見[hikken] worth seeing
必殺[hissatsu] certain kill
必死に[hisshini] frantically