quash vs subjugate

quash and subjugate both are verbs.

Word	Noun	Adjective	Verb	Adverb
quash	No	No	Yes	No
subjugate	No	No	Yes	No

As verbs, quash and subjugate are synonyms defined as:

Other synonyms of quash include keep down, reduce, repress, subdue.

quash (verb)	subjugate (verb)
put down by force or intimidation	make subservient; force to submit or subdue
declare invalid	put down by force or intimidation