Extinguish:
Etymology: 词源:
Latin exstinguere (from ex- + stinguere to extinguish) + English -ish (as in abolish); akin to Latin instigare to incite
Distinguish:
Etymology:
alteration of Middle English distinguen, from Anglo-French distinguer, from Latin distinguere, literally, to separate by pricking, from dis- + -stinguere (akin to Latin instigare to urge on) — more at stick
你能提出这个问题, 想必你的英语应该足够能够通过上面的词源分析来自己得出答案吧