magniloquence vs grandiloquence

magniloquence and grandiloquence both are nouns.

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

As nouns, magniloquence and grandiloquence are synonyms defined as:

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

Other synonyms of magniloquence include grandiosity, ornateness, rhetoric.

magniloquence (noun)	grandiloquence (noun)
high-flown style; excessive use of verbal ornamentation	high-flown style; excessive use of verbal ornamentation