spectacular vs outstanding

spectacular is a noun but outstanding is not a noun.

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

As adjectives, spectacular and outstanding are synonyms defined as:

spectacular and outstanding: having a quality that thrusts itself into attention

Other synonyms of spectacular include prominent, salient, striking.

spectacular (noun)	outstanding (noun)
a lavishly produced performance

spectacular (adjective)	outstanding (adjective)
having a quality that thrusts itself into attention	having a quality that thrusts itself into attention
characteristic of spectacles or drama	of major significance or importance
sensational in appearance or thrilling in effect	distinguished from others in excellence
	owed as a debt