safety deposit box vs lockbox

safety deposit box and lockbox both are nouns.

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

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

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

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

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