coercion vs compulsion

coercion and compulsion both are nouns.

Word	Noun	Adjective	Verb	Adverb
coercion	Yes	No	No	No
compulsion	Yes	No	No	No

As nouns, coercion and compulsion are synonyms defined as:

coercion (noun)	compulsion (noun)
using force to cause something to occur	using force to cause something to occur
the act of compelling by force of authority	an irrational motive for performing trivial or repetitive actions, even against your will
	an urge to do or say something that might be better left undone or unsaid