安全保障[anzenhoshou] security guarantee (e.g. military security, network security, etc.)
安全保障条約[anzenhoshoujouyaku] US-Japan Security Treaty
安保[anpo] US-Japan Security Treaty
医療保険[iryouhoken] medical-care insurance
火災保険[kasaihoken] fire insurance

火保ち[himochi] fire-holding qualities
過保護[kahogo] overprotective
確保[kakuho] guarantee
環境保護論者[kankyouhogoronsha] environmentalist
機密保護[kimitsuhogo] security (e.g. data, password, etc.)

天魚[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
御天気[otenki] weather
コール天[kooruten] corded velveteen
破天連[pateren] Portuguese Jesuits (in Japan in the 16th century)
天鵝絨[tengajuu] velvet

悪天[akuten] bad weather
悪天候[akutenkou] bad weather
悪天使[akutenshi] evil angels
旭日昇天[kyokujitsushouten] full of vigor and vitality (like the rising sun) (vigour)
一天[itten] the whole sky

グレゴリオ暦[guregorioreki] Gregorian calendar
陰暦[inreki] lunar calendar
花暦[hanagoyomi] flower calendar
改暦[kaireki] calendar revision (e.g. at start of year)
還暦[kanreki] 60th birthday

旧暦[kyuureki] Japan's old (lunisolar) calendar
西暦[seireki] Christian Era
太陽暦[taiyoureki] solar calendar
剥がし暦[hagashigoyomi] calendar pad
盲暦[mekuragoyomi] picture calendar for illiterates