pompous vs grandiloquent

pompous and grandiloquent both are adjectives.

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

As adjectives, pompous and grandiloquent are synonyms defined as:

Other synonyms of pompous include overblown, pontifical, portentous.

pompous (adjective)	grandiloquent (adjective)
characterized by pomp and ceremony and stately display	puffed up with vanity
puffed up with vanity	lofty in style