暗喩[anyu] metaphor
隠喩[inyu] metaphor
教喩[kyouyu] (licensed) teacher
直喩[chokuyu] simile
喩え[tatoe] example

喩える[tatoeru] to compare
譬喩[keiyu] simile
諷喩[fuuyu] hint
比喩的[hiyuteki] figurative
換喩[kanyu] metonymy

アナログデジタル変換器[anarogudejitaruhenkanki] analog-digital converter
データ交換[deetakoukan] data exchange
パリティ変換[paritihenkan] parity transformation (physics)
メール交換[meerukoukan] exchange of letters
意見交換[ikenkoukan] exchange of ideas

引換て[hikikaete] on the contrary
下位互換性[kaigokansei] downward compatibility
かな漢字変換[kanakanjihenkan] kana-kanji conversion (on a computer, etc.)
可換群[kakangun] Abelian group
賀詞交換[gashikoukan] New Year greetings (parties)