great vs outstanding

great is a noun but outstanding is not a noun.

Word	Noun	Adjective	Verb	Adverb
great	Yes	Yes	No	No
outstanding	No	Yes	No	No

As adjectives, great and outstanding are synonyms defined as:

great (noun)	outstanding (noun)
a person who has achieved distinction and honor in some field

great (adjective)	outstanding (adjective)
excellent	having a quality that thrusts itself into attention
in an advanced stage of pregnancy	of major significance or importance
uppercase	distinguished from others in excellence
remarkable or out of the ordinary in degree or magnitude or effect	owed as a debt
of major significance or importance
relatively large in size or number or extent; larger than others of its kind