その反面[sonohanmen] on the other hand
に反して[nihanshite] against
違反者[ihansha] violator (of a law)
違反[ihan] violation (of law)
一律減反[ichiritsugentan] reduction in area of rice under cultivation

陰性反応[inseihannou] negative reaction (in patient)
化学反応[kagakuhannou] chemical reaction
可逆反応[kagyakuhannou] reversible reaction
核反応[kakuhannou] nuclear reaction
核反応炉[kakuhannouro] nuclear reactor

一段[ichidan] more
一段動詞[ichidandoushi] ichidan verb (one of the two main conjugation classes of verbs in modern Japanese, usually ending in -eru or -iru)
一段落[ichidanraku] completing the first stage
階段[kaidan] stairs
格段[kakudan] special

計画段階[keikakudankai] planning stage
決済手段[kessaishudan] method of payment
減段[gentan] reduction (of crop size)
五段[godan] Japanese verb group
五段動詞[godandoushi] godan verb (one of the two main conjugation classes of verbs in modern Japanese, usually ending in -u, -ku, -su, -tsu, -gu, -bu, -mu, etc.)

圧着端子[acchakutanshi] crimp contact
異端[itan] heresy
異端者[itansha] heretic
井戸端[idobata] side of well
井戸端会議[idobatakaigi] content-free chat

一端[ittan] one end
一端[ippashi] competent enough
下っ端[shitappa] underling
下端[katan] lower end
管端[kantan] end of wind instrument