slop basin vs slop bowl

slop basin and slop bowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
slop basin	Yes	No	No	No
slop bowl	Yes	No	No	No

As nouns, slop basin and slop bowl are synonyms defined as:

slop basin and slop bowl: a bowl into which the dregs of teacups and coffee cups are emptied at the table

slop basin (noun)	slop bowl (noun)
a bowl into which the dregs of teacups and coffee cups are emptied at the table	a bowl into which the dregs of teacups and coffee cups are emptied at the table