overblown vs grandiloquent

overblown and grandiloquent both are adjectives.

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

As adjectives, overblown and grandiloquent are synonyms defined as:

Other synonyms of overblown include pompous, pontifical, portentous.

overblown (adjective)	grandiloquent (adjective)
past the stage of full bloom	puffed up with vanity
puffed up with vanity	lofty in style