cotton candy vs spun sugar

cotton candy and spun sugar both are nouns.

Word	Noun	Adjective	Verb	Adverb
cotton candy	Yes	No	No	No
spun sugar	Yes	No	No	No

As nouns, cotton candy and spun sugar are synonyms defined as:

cotton candy and spun sugar: a candy made by spinning sugar that has been boiled to a high temperature

Other synonyms of cotton candy include candyfloss.

cotton candy (noun)	spun sugar (noun)
a candy made by spinning sugar that has been boiled to a high temperature	a candy made by spinning sugar that has been boiled to a high temperature