plebeian vs philistine

plebeian and philistine both are nouns.

Word	Noun	Adjective	Verb	Adverb
plebeian	Yes	Yes	No	No
philistine	Yes	Yes	No	No

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

Other hyponyms of plebeian include anti-intellectual, lowbrow.

plebeian (noun)	philistine (noun)
one of the common people	a person who is uninterested in intellectual pursuits

plebeian (adjective)	philistine (adjective)
of or associated with the great masses of people	smug and ignorant and indifferent or hostile to artistic and cultural values