Waste is a versatile English word with multiple meanings depending on context.
As a noun, waste primarily refers to:
1. Unwanted or unusable materials (e.g., household waste)
2. A large area of barren land (e.g., desert wasteland)
3. The act of using something carelessly (e.g., a waste of time)
As a verb, waste means:
1. To use carelessly or extravagantly (e.g., waste money)
2. To become progressively weaker (e.g., wasting disease)
3. To kill or murder (slang usage)