poor box vs alms box

poor box and alms box both are nouns.

Word	Noun	Adjective	Verb	Adverb
poor box	Yes	No	No	No
alms box	Yes	No	No	No

As nouns, poor box and alms box are synonyms defined as:

poor box and alms box: box for collecting alms, especially one in a church

Other synonyms of poor box include mite box.

poor box (noun)	alms box (noun)
box for collecting alms, especially one in a church	box for collecting alms, especially one in a church