freezer vs fridge

freezer and fridge both are nouns.

Word	Noun	Adjective	Verb	Adverb
freezer	Yes	No	No	No
fridge	Yes	No	No	No

As nouns, fridge is a hypernym of freezer; that is, fridge is a word with a broader meaning than freezer:

freezer: electric refrigerator (trade name Deepfreeze) in which food is frozen and stored for long periods of time
fridge: a refrigerator in which the coolant is pumped around by an electric motor

Other hypernyms of freezer include electric refrigerator.

freezer (noun)	fridge (noun)
electric refrigerator (trade name Deepfreeze) in which food is frozen and stored for long periods of time	a refrigerator in which the coolant is pumped around by an electric motor