autoinjector vs hypo

autoinjector and hypo both are nouns.

Word	Noun	Adjective	Verb	Adverb
autoinjector	Yes	No	No	No
hypo	Yes	No	No	No

As nouns, hypo is a hypernym of autoinjector; that is, hypo is a word with a broader meaning than autoinjector:

autoinjector: a hypodermic syringe to use in injecting yourself with a liquid
hypo: a piston syringe that is fitted with a hypodermic needle for giving injections

Other hypernyms of autoinjector include hypodermic, hypodermic syringe.

autoinjector (noun)	hypo (noun)
a hypodermic syringe to use in injecting yourself with a liquid	a piston syringe that is fitted with a hypodermic needle for giving injections
	a compound used as a fixing agent in photographic developing