|The Simple English Wiktionary has a definition for: waste.|
There are a number of different types of waste. It can exist as a solid, liquid, or gas or as waste heat. When released in as a liquid or gas the wastes can be referred to as emissions. It is usually strongly linked with pollution.
Waste may also be something that you cannot touch as wasted time or wasted opportunities. The term waste implies things which have been used inefficiently or inappropriately.
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