transmission, gearbox (mechanical assembly of gears that changes the torque and speed of shaft rotations)

possessing a dan (rank) / (engineering, archaeology) having steps; being stepped

steps (up and down); stairs / rating; ranking / row; line (of text) / (mathematics) multiplication table

(automotive) An automatic transmission.

changing gears

change gears, shift gears

a loom / woven cloth

step / rank; grade

(after a number) -th rank; -th degree black belt (in karate, judo, etc) / a section (horizonal line) in the gojūon table, which consists of kanas that have or historically have a same vowel

(phonology, orthography, grammar) the first and highest-graded column of the 五十音図 (literally “table of the fifty sounds”), consisting of the ten kana あ/ア (a), か/カ (ka), さ/サ (sa), た/タ (ta), な/ナ (na), は/ハ (ha), ま/マ (ma), や/ヤ (ya), ら/ラ (ra) and わ/ワ (wa)