vulgarise vs disperse

vulgarise and disperse both are verbs.

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

As verbs, disperse is a hypernym of vulgarise; that is, disperse 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
disperse: cause to become widely known

vulgarise (verb)	disperse (verb)
act in a vulgar manner	cause to separate
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 loosely
	separate (light) into spectral rays
	move away from each other
	to cause to separate and go in different directions