dinner pail vs dinner bucket

dinner pail and dinner bucket both are nouns.

Word	Noun	Adjective	Verb	Adverb
dinner pail	Yes	No	No	No
dinner bucket	Yes	No	No	No

As nouns, dinner pail and dinner bucket are synonyms defined as:

dinner pail and dinner bucket: a pail in which a workman carries his lunch or dinner

dinner pail (noun)	dinner bucket (noun)
a pail in which a workman carries his lunch or dinner	a pail in which a workman carries his lunch or dinner