vulgarise vs circularise

vulgarise and circularise both are verbs.

Word	Noun	Adjective	Verb	Adverb
vulgarise	No	No	Yes	No
circularise	No	No	Yes	No

As verbs, circularise is a hypernym of vulgarise; that is, circularise is a word with a broader meaning than vulgarise:

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

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