TSUMUGU · TOCFL C1 (est.) · 字
岡
岡 ＝ 网 ＋ 山
ㄍㄤ · gāng
noun — a ridge, a low hill
字源 FORM — what the parts do
网聲gāng — gives the soundworn to the 冂 + two strokes on top; the old net is no longer readable
IFTwǎng → gāng — the donor is the same net behind 剛、鋼、綱
A hill (山) under a worn net (网) on top, the sound — wǎng worn to gāng, now just 冂 and two strokes. That frame is the same phonetic that builds 剛 (hard), 鋼 (steel), 綱 (the main rope). Here it names the ridge of a hill.
故事 STORY — a scene to remember it by
山（山）頂上一道平平的稜線（网的舊框）——走上去，是一條岡。
A hill (山) crowned by a flat ridgeline (the old net's frame) — walk it, and it is a ridge.
字源記憶法
意 · Meanings
(本義)山岡— a ridge, a low hill常用
→岡位、黃岡— a post; a place name
(本義) original meaning · → ⇒ each arrow = one more step of extension