fryer vs kitchen appliance

fryer and kitchen appliance both are nouns.

Word	Noun	Adjective	Verb	Adverb
fryer	Yes	No	No	No
kitchen appliance	Yes	No	No	No

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

fryer: A kitchen appliance for deep frying; its size depends on intended use.
kitchen appliance: a home appliance used in preparing food

fryer (noun)	kitchen appliance (noun)
A kitchen appliance for deep frying; its size depends on intended use.	a home appliance used in preparing food
flesh of a medium-sized young chicken suitable for frying