* Preposition: This is the most common usage. It shows the relationship between a noun or pronoun and something else.
* Example: "The book was among the others on the shelf."
* Adverb: Less common, but possible. It can mean "in a group" or "together."
* Example: "The friends sat among themselves, whispering secrets."
* Adjective: Very rare, but it can function as an adjective in some specific contexts.
* Example: "We were among the lucky ones." (Here, it's acting as an adjective modifying "ones").
It's important to look at the context of the sentence to determine the part of speech of "among".