American cheese vs cheddar cheese

American cheese and cheddar cheese both are nouns.

Word	Noun	Adjective	Verb	Adverb
American cheese	Yes	No	No	No
cheddar cheese	Yes	No	No	No

As nouns, American cheese and cheddar cheese are synonyms defined as:

American cheese and cheddar cheese: hard smooth-textured cheese; originally made in Cheddar in southwestern England

Other synonyms of American cheese include Armerican cheddar, cheddar.

American cheese (noun)	cheddar cheese (noun)
hard smooth-textured cheese; originally made in Cheddar in southwestern England	hard smooth-textured cheese; originally made in Cheddar in southwestern England