tornado cellar vs storm cellar

tornado cellar and storm cellar both are nouns.

Word	Noun	Adjective	Verb	Adverb
tornado cellar	Yes	No	No	No
storm cellar	Yes	No	No	No

As nouns, tornado cellar and storm cellar are synonyms defined as:

tornado cellar and storm cellar: an underground shelter where you can go until a storm passes

Other synonyms of tornado cellar include cyclone cellar.

tornado cellar (noun)	storm cellar (noun)
an underground shelter where you can go until a storm passes	an underground shelter where you can go until a storm passes