ash bin vs trash bin

ash bin and trash bin both are nouns.

Word	Noun	Adjective	Verb	Adverb
ash bin	Yes	No	No	No
trash bin	Yes	No	No	No

As nouns, ash bin and trash bin are synonyms defined as:

Other synonyms of ash bin include ash-bin, ashbin, ashcan, dustbin, garbage can, trash barrel, trash can, wastebin.

ash bin (noun)	trash bin (noun)
a bin that holds rubbish until it is collected	a bin that holds rubbish until it is collected