donut fryer vs fryolator

donut fryer and fryolator both are nouns.

Word	Noun	Adjective	Verb	Adverb
donut fryer	Yes	No	No	No
fryolator	Yes	No	No	No

As nouns, fryolator is a hypernym of donut fryer; that is, fryolator is a word with a broader meaning than donut fryer:

donut fryer: a machine used to fry large quantities of doughnuts at once.
fryolator: A kitchen appliance for deep frying; its size depends on intended use.

Other hypernyms of donut fryer include machine, deep fat fryer, deep fryer, frier, fryer.

donut fryer (noun)	fryolator (noun)
a machine used to fry large quantities of doughnuts at once.	A kitchen appliance for deep frying; its size depends on intended use.