* Noun: This is the more common usage, meaning something annoying or troublesome. For example: "The barking dog was a real nuisance."
* Adjective: This usage is less common and often refers to something that is annoying or bothersome. For example: "The children's constant noise was a nuisance."
It's important to note that the adjective form is usually used with a noun (like "nuisance noise").