sodium thiosulphate vs hypo

sodium thiosulphate and hypo both are nouns.

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

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

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

Other synonyms of sodium thiosulphate include sodium thiosulfate.

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