sodium pyrophosphate vs tetrasodium pyrophosphate

sodium pyrophosphate and tetrasodium pyrophosphate both are nouns.

Word	Noun	Adjective	Verb	Adverb
sodium pyrophosphate	Yes	No	No	No
tetrasodium pyrophosphate	Yes	No	No	No

As nouns, sodium pyrophosphate and tetrasodium pyrophosphate are synonyms defined as:

sodium pyrophosphate and tetrasodium pyrophosphate: a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents

sodium pyrophosphate (noun)	tetrasodium pyrophosphate (noun)
a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents	a sodium salt of pyrophosphoric acid used as a builder in soaps and detergents