spotless vs spic-and-span

spotless and spic-and-span both are adjectives.

Word	Noun	Adjective	Verb	Adverb
spotless	No	Yes	No	No
spic-and-span	No	Yes	No	No

As adjectives, spotless and spic-and-span are synonyms defined as:

Other synonyms of spotless include immaculate, speckless, spic, spick-and-span, spick.

spotless (adjective)	spic-and-span (adjective)
completely neat and clean	completely neat and clean
	conspicuously new