hypo vs sodium thiosulphate

hypo and sodium thiosulphate both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypo	Yes	No	No	No
sodium thiosulphate	Yes	No	No	No

As nouns, hypo and sodium thiosulphate are synonyms defined as:

hypo and sodium thiosulphate: a compound used as a fixing agent in photographic developing

Other synonyms of hypo include sodium thiosulfate.

hypo (noun)	sodium thiosulphate (noun)
a piston syringe that is fitted with a hypodermic needle for giving injections	a compound used as a fixing agent in photographic developing
a compound used as a fixing agent in photographic developing