majestic vs gallant

majestic is not a noun while gallant is a noun.

Word	Noun	Adjective	Verb	Adverb
majestic	No	Yes	No	No
gallant	Yes	Yes	No	No

As adjectives, majestic and gallant are synonyms defined as:

Other synonyms of majestic include lofty, proud.

majestic (noun)	gallant (noun)
	a man who attends or escorts a woman
	a man who is much concerned with his dress and appearance

majestic (adjective)	gallant (adjective)
having or displaying great dignity or nobility	unflinching in battle or action
belonging to or befitting a supreme ruler	being attentive to women like an ideal knight
majestic in manner or bearing; superior to mundane matters	having or displaying great dignity or nobility
	lively and spirited