1. Noun (plural): This is the most common usage. It refers to multiple staffs, which are long, slender poles or sticks used for support, as in:
* "The marching band carried their staffs proudly."
* "The hospital is understaffed, meaning they need more staffs."
2. Verb (plural): This usage is less common and refers to the action of providing staff, as in:
* "The company staffs its offices with highly qualified individuals."
To determine the correct part of speech, you need to consider the sentence it's used in and the intended meaning.