Waste Product
Contamination
Another term for unwanted sound is noise.
Two types of unwanted energy are waste heat, generated as a byproduct of many industrial processes, and noise pollution, which is unwanted sound that can disrupt environments and cause harm to human health and wildlife.
Unwanted heat refers to excess heat in a system or environment that can lead to inefficiency, discomfort, or damage. It can be generated as a byproduct of various processes or systems and needs to be controlled or removed to maintain optimal conditions.
Spam.
An unwanted plant is a weed.
Shades is a slang term which may refer to sunglasses, which are used to block unwanted sunlight and/or glare from the eyes. Shades also may refer to window coverings, which are used for much of the same reason, to block unwanted sunlight and/or glare from the home.
No, unwanted foods can't be used as fuel!
The byproduct of meat packing is used to make pet foods.
Assault
Radiant Barrier is a term that is most commonly used to describe a kind of material that is used to help save energy by holding in heat and keeping out cold, yet being able to keep out unwanted heat.
In a medical term, nitrates is sometimes used on a urinalysis or urine dipstick report. Nitrates in this context are a metabolic byproduct of bacteria living in the urinary tract.