impressive vs noble

impressive is not a noun while noble is a noun.

Word	Noun	Adjective	Verb	Adverb
impressive	No	Yes	No	No
noble	Yes	Yes	No	No

impressive (noun)	noble (noun)
	a titled peer of the realm

impressive (adjective)	noble (adjective)
making a strong or vivid impression	having or showing or indicative of high or elevated character
producing a strong effect	of or belonging to or constituting the hereditary aristocracy especially as derived from feudal times
	impressive in size, manner, or appearance
	inert especially toward oxygen