* Noun: This is the most common usage. It refers to a small label or piece of material attached to something for identification or information.
* Verb: This refers to the action of touching someone or something to signal a game is on or to make them "it".
* Adjective: This is less common but can be used to describe something that is attached or tagged.
Examples:
* Noun: I lost the price tag on my new shirt.
* Verb: She tried to tag me in the game of hide-and-seek.
* Adjective: The tagged item was the one that was on sale.
It's important to look at the context to determine the correct part of speech for "tag".