Etymology
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-tion 

syllable formed when the word-forming element -ion (from Latin -io) is fixed to a base or to another suffix ending in -t or -te. In Middle English, in words via Old French, it often was -cion (in coercion and suspicion, however, the -c- belongs to the base).

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scrip (n.)

1610s, "small piece of paper with writing on it, a written slip," apparently a corruption of script (n.). In the commercial use, "a certificate of a right to receive something" (especially a stock share), 1762, in this sense probably shortened from (sub)scrip(tion) receipt (see subscription). Originally "receipt for a portion of a loan subscribed;" the meaning "certificate issued as currency" is recorded by 1790. In U.S. history, "fractional paper money" (by 1889).

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coercion (n.)

early 15c., cohercioun, "compulsion, forcible constraint," from Old French cohercion (Modern French coercion), from Medieval Latin coercionem, from Latin coerctionem, earlier coercitionem, noun of action from past-participle stem of coercere "to control, restrain" (see coerce).

It defies the usual pattern where Middle English -cion reverts to Latin type and becomes -tion. Specific sense in reference to government by force, ostensibly to suppress disorder, emerged from 19c. British policies in Ireland. "As the word has had, in later times, a bad flavour, suggesting the application of force as a remedy, or its employment against the general sense of the community, it is now usually avoided by those who approve of the action in question" [OED].

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