* Noun: This is the most common usage. It refers to a single, distinct thing or entity.
* Example: "The army was divided into smaller units."
* Adjective: It can describe something as being single or indivisible.
* Example: "They sold the apartment as a unit."
* Verb: It's less common but can be used to mean "to make into a single entity".
* Example: "The two companies unit to form a larger corporation."
Let me know if you have a specific sentence in mind, and I can tell you the part of speech for "unit" in that context!