trisodium phosphate vs trisodium orthophosphate

trisodium phosphate and trisodium orthophosphate both are nouns.

Word	Noun	Adjective	Verb	Adverb
trisodium phosphate	Yes	No	No	No
trisodium orthophosphate	Yes	No	No	No

As nouns, trisodium phosphate and trisodium orthophosphate are synonyms defined as:

trisodium phosphate and trisodium orthophosphate: the tertiary phosphate of sodium used as a builder in soaps and detergents

Other synonyms of trisodium phosphate include tribasic sodium phosphate.

trisodium phosphate (noun)	trisodium orthophosphate (noun)
the tertiary phosphate of sodium used as a builder in soaps and detergents	the tertiary phosphate of sodium used as a builder in soaps and detergents