* Noun: "The document is in PDF format." Here, "format" refers to the specific type of file.
* Verb: "Please format the text for better readability." Here, "format" is the action of arranging or structuring the text.
* Adjective: "We need a format change for the presentation." Here, "format" describes the need for a change in the structure or arrangement.
Therefore, "format" can be a noun, a verb, or an adjective.