deposit box vs safety deposit box

deposit box and safety deposit box both are nouns.

Word	Noun	Adjective	Verb	Adverb
deposit box	Yes	No	No	No
safety deposit box	Yes	No	No	No

As nouns, deposit box and safety deposit box are synonyms defined as:

deposit box and safety deposit box: a fireproof metal strongbox (usually in a bank) for storing valuables

Other synonyms of deposit box include lockbox, safe-deposit, safe-deposit box, safety-deposit.

deposit box (noun)	safety deposit box (noun)
a fireproof metal strongbox (usually in a bank) for storing valuables	a fireproof metal strongbox (usually in a bank) for storing valuables