doughnut machine vs fryolator

doughnut machine and fryolator both are nouns.

Word	Noun	Adjective	Verb	Adverb
doughnut machine	Yes	No	No	No
fryolator	Yes	No	No	No

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

doughnut machine: 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 doughnut machine include machine, deep fat fryer, deep fryer, frier, fryer.

doughnut machine (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.