vulgarian vs unpleasant person

vulgarian and unpleasant person both are nouns.

Word	Noun	Adjective	Verb	Adverb
vulgarian	Yes	No	No	No
unpleasant person	Yes	No	No	No

As nouns, unpleasant person is a hypernym of vulgarian; that is, unpleasant person is a word with a broader meaning than vulgarian:

vulgarian: a vulgar person (especially someone who makes a vulgar display of wealth)
unpleasant person: a person who is not pleasant or agreeable

Other hypernyms of vulgarian include disagreeable person.

vulgarian (noun)	unpleasant person (noun)
a vulgar person (especially someone who makes a vulgar display of wealth)	a person who is not pleasant or agreeable