* Noun: Most commonly, "collections" is a noun, referring to a group of items gathered together. For example: "She has a collection of antique coins."
* Verb: Less commonly, "collections" can be a verb, meaning to gather or accumulate something. For example: "The museum is actively collecting new artifacts."
* Adjective: In very specific contexts, "collections" can function as an adjective describing something related to gathering or accumulating. For example: "The museum's collections department is hiring."
To determine the correct part of speech, you'll need to consider the sentence's context.