A nuisance is something bothersome. Usually nuisances can be all sorts of things. A person can be a nuisance when he/she is disruptive to others. Neighbors can be a nuisance when they affect their neighbors with loud music and partying.
Bugs are a common nuisance to gardeners. Bugs are also considered pests to many people. A dog barking close to your home when you're trying to sleep is a nuisance. Motorists causing excessive noise in the streets are a nuisance.
There are all kinds of nuisances, anyone and anything can be a nuisance sometimes.
Check this Wikipedia article about nuisance:
"Nuisance also spelled nocence. through Fr. noisance, nuisance, from Lat. nocere, to hurt) is a common law tort. It means that which causes offence, annoyance, trouble or injury. A nuisance can be either public (also "common") or private. A public nuisance was defined by English scholar Sir J. F. Stephen as,
"an act not warranted by law, or an omission to discharge a legal duty, which act or omission obstructs or causes inconvenience or damage to the public in the exercise of rights common to all His Majesty's subjects".
"Private nuisance" is the interference with the right of specific people. Nuisance is one of the oldest causes of action known to the common law, with cases framed in nuisance going back almost to the beginning of recorded case law. Nuisance signifies that the "right of quiet enjoyment" is being disrupted to such a degree that a tort is being committed."
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