catsup vs tomato ketchup

catsup and tomato ketchup both are nouns.

Word	Noun	Adjective	Verb	Adverb
catsup	Yes	No	No	No
tomato ketchup	Yes	No	No	No

As nouns, catsup and tomato ketchup are synonyms defined as:

Other synonyms of catsup include cetchup, ketchup.

catsup (noun)	tomato ketchup (noun)
thick spicy sauce made from tomatoes	thick spicy sauce made from tomatoes