vulgarize vs circularize

vulgarize and circularize both are verbs.

Word	Noun	Adjective	Verb	Adverb
vulgarize	No	No	Yes	No
circularize	No	No	Yes	No

As verbs, circularize is a hypernym of vulgarize; that is, circularize is a word with a broader meaning than vulgarize:

vulgarize: cater to popular taste to make popular and present to the general public; bring into general or common use
circularize: cause to become widely known

vulgarize (verb)	circularize (verb)
act in a vulgar manner	make circular
debase and make vulgar	cause to become widely known
cater to popular taste to make popular and present to the general public; bring into general or common use	distribute circulars to
	canvass by distributing letters
	canvass by using a questionnaire