What part of speech is plague?

"Plague" can be several parts of speech, depending on how it's used in a sentence:

* Noun: When referring to the disease itself: "The plague ravaged the city."

* Verb: When used to mean "to trouble or afflict": "They were plagued by financial problems."

* Adjective: Used to describe something as annoying or troublesome: "A plague of insects invaded the garden."

Let me know if you want to see some examples in context!