越冬[ettou] passing the winter
夏炉冬扇[karotousen] summer fires and winter fans
旧冬[kyuutou] former winters
厳冬[gentou] severe winter
今冬[kontou] this winter

三冬[santou] three winter months
春夏秋冬[shunkashuutou] spring, summer, autumn (fall) and winter
初冬[shotou] early winter
真冬[mafuyu] midwinter
暖冬[dantou] mild winter

アナログデジタル変換器[anarogudejitaruhenkanki] analog-digital converter
パリティ変換[paritihenkan] parity transformation (physics)
異変[ihen] unusual phenomenon
移り変り[utsurikawari] change (e.g. season)
一定不変[itteifuhen] invariable

一風変った[ippuukawatta] eccentric
一変[ippen] complete change
黄変米[ouhenmai] spoiled rice
化学変化[kagakuhenka] chemical change
かな漢字変換[kanakanjihenkan] kana-kanji conversion (on a computer, etc.)

温暖[ondan] warmth
温暖化現象[ondankagenshou] greenhouse effect
寒暖計[kandankei] thermometer
珠暖簾[tamanoren] curtain made of strung beads
切り暖簾[kirinoren] short split entrance curtain

暖かい人[atatakaihito] warmhearted person
暖かさ[atatakasa] warmth
暖色[danshoku] warm colour
暖冬[dantou] mild winter
暖房[danbou] heating

によって異なる[niyottekotonaru] to differ depending on ...
異る[kotonaru] to differ
異域[iiki] foreign lands
異音[ion] allophone
異化[ika] dissimilation

異機種[ikishu] heterogenous equipment
異義[igi] different meaning
異議[igi] objection
異議なく[iginaku] without demur
異境[ikyou] foreign country