grandiloquence vs rhetoric

grandiloquence and rhetoric both are nouns.

Word	Noun	Adjective	Verb	Adverb
grandiloquence	Yes	No	No	No
rhetoric	Yes	No	No	No

As nouns, grandiloquence and rhetoric are synonyms defined as:

grandiloquence and rhetoric: high-flown style; excessive use of verbal ornamentation

Other synonyms of grandiloquence include grandiosity, magniloquence, ornateness.

grandiloquence (noun)	rhetoric (noun)
high-flown style; excessive use of verbal ornamentation	study of the technique and rules for using language effectively (especially in public speaking)
	using language effectively to please or persuade
	high-flown style; excessive use of verbal ornamentation
	loud and confused and empty talk