vulgarian vs sloven

vulgarian and sloven both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulgarian	Yes	No	No	No
sloven	Yes	No	No	No

As nouns, sloven is a hyponym of vulgarian; that is, sloven is a word with a more specific, narrower meaning than vulgarian:

vulgarian: a vulgar person (especially someone who makes a vulgar display of wealth)
sloven: a coarse obnoxious person

Other hyponyms of vulgarian include ribald, pig, slob, slovenly person.

vulgarian (noun)	sloven (noun)
a vulgar person (especially someone who makes a vulgar display of wealth)	a coarse obnoxious person