waste of money
— Noun
– English
～ money spent for inadequate return; "the senator said that the project was a waste of money"
waste material
— Noun
– English
～ any materials unused and rejected as worthless or unwanted; "they collect the waste once a week"; "much of the waste material is carried off in the sewers"
waste of material
— Noun
– English
～ a useless consumption of material
waste pipe
— Noun
– English
～ a pipe through which liquid is carried away