TSUMUGU · A2 (est.) · 字
証
ㄓㄥˋ · zhèng
verb/noun — to prove; proof, evidence (variant of 證)
字源 FORM — what the parts do
Words (言) made straight (正) — to set the account right by speech, to prove. 正 zhèng carries the sound exactly and lends its "upright, true" sense. 証 is the lighter variant of 證 (which writes 登 on the right); both mean to prove.
故事 STORY — a scene to remember it by
把話（言）說正（正），事情就立住了——証。
Set the words (言) straight (正), and the matter stands proven — 証.
字源記憶法
意 · Meanings
(本義)證明、證實— to prove, verify常用
→證件、證據— document; evidence常用
(本義) original meaning · → ⇒ each arrow = one more step of extension