grandiloquent vs pompous

grandiloquent and pompous both are adjectives.

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

As adjectives, grandiloquent and pompous are synonyms defined as:

Other synonyms of grandiloquent include overblown, pontifical, portentous.

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