spectacular vs prominent

spectacular is a noun but prominent is not a noun.

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

As adjectives, spectacular and prominent are synonyms defined as:

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

Other synonyms of spectacular include outstanding, salient, striking.

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

spectacular (adjective)	prominent (adjective)
having a quality that thrusts itself into attention	having a quality that thrusts itself into attention
characteristic of spectacles or drama	conspicuous in position or importance
sensational in appearance or thrilling in effect