savings bank vs money box

savings bank and money box both are nouns.

Word	Noun	Adjective	Verb	Adverb
savings bank	Yes	No	No	No
money box	Yes	No	No	No

As nouns, savings bank and money box are synonyms defined as:

savings bank and money box: a container (usually with a slot in the top) for keeping money at home

Other synonyms of savings bank include bank, coin bank.

savings bank (noun)	money box (noun)
a container (usually with a slot in the top) for keeping money at home	a strongbox for holding cash
a thrift institution in the northeastern United States; since deregulation in the 1980s they offer services competitive with many commercial banks	a container (usually with a slot in the top) for keeping money at home