ammonia water vs ammonia

ammonia water and ammonia both are nouns.

Word	Noun	Adjective	Verb	Adverb
ammonia water	Yes	No	No	No
ammonia	Yes	No	No	No

As nouns, ammonia water and ammonia are synonyms defined as:

Other synonyms of ammonia water include ammonium hydroxide.

ammonia water (noun)	ammonia (noun)
a water solution of ammonia	a pungent gas compounded of nitrogen and hydrogen (NH3)
	a water solution of ammonia