soda ash vs soda

soda ash and soda both are nouns.

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

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

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

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

soda ash (noun)	soda (noun)
a sodium salt of carbonic acid; used in making soap powders and glass and paper	a sweet drink containing carbonated water and flavoring
	a sodium salt of carbonic acid; used in making soap powders and glass and paper