pompous vs overblown

pompous and overblown both are adjectives.

Word	Noun	Adjective	Verb	Adverb
pompous	No	Yes	No	No
overblown	No	Yes	No	No

As adjectives, pompous and overblown are synonyms defined as:

Other synonyms of pompous include grandiloquent, pontifical, portentous.

pompous (adjective)	overblown (adjective)
characterized by pomp and ceremony and stately display	past the stage of full bloom
puffed up with vanity	puffed up with vanity