elevated vs high-flown

elevated is a noun but high-flown is not a noun.

Word	Noun	Adjective	Verb	Adverb
elevated	Yes	Yes	No	No
high-flown	No	Yes	No	No

As adjectives, elevated and high-flown are synonyms defined as:

elevated and high-flown: of high moral or intellectual value; elevated in nature or style

Other synonyms of elevated include exalted, grand, high-minded, idealistic, lofty, noble-minded, rarefied, rarified, sublime.

elevated (noun)	high-flown (noun)
a railway that is powered by electricity and that runs on a track that is raised above the street level

elevated (adjective)	high-flown (adjective)
increased in amount or degree	of high moral or intellectual value; elevated in nature or style
of high moral or intellectual value; elevated in nature or style	pretentious (especially with regard to language or ideals)
raised above the ground