[いちだんどうし, ichidandoushi] (n) (See 五段動詞, 食べる・1) ichidan verb (one of the two main conjugation classes of verbs in modern Japanese, usually ending in -eru or -iru); type II verb
[ごだんどうし, godandoushi] (n) (See 一段動詞, 話す・1) 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.); type I verb