賢哲[kentetsu] wise man
人生哲学[jinseitetsugaku] philosophy of life
先哲[sentetsu] ancient wise men
前哲[zentetsu] former men of wisdom and virtue
哲学[tetsugaku] philosophy

哲学者[tetsugakusha] philosopher
哲学的[tetsugakuteki] philosophical
哲人[tetsujin] wise man
変哲もない[hentetsumonai] usual
歴史哲学[rekishitetsugaku] historical philosophy

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.)