soda ash vs sodium carbonate

soda ash and sodium carbonate both are nouns.

Word	Noun	Adjective	Verb	Adverb
soda ash	Yes	No	No	No
sodium carbonate	Yes	No	No	No

As nouns, soda ash and sodium carbonate are synonyms defined as:

soda ash and sodium carbonate: a sodium salt of carbonic acid; used in making soap powders and glass and paper

Other synonyms of soda ash include sal soda, soda, washing soda.

soda ash (noun)	sodium carbonate (noun)
a sodium salt of carbonic acid; used in making soap powders and glass and paper	a sodium salt of carbonic acid; used in making soap powders and glass and paper