What part of speech is the word game?

The word "game" can be several parts of speech, depending on how it's used in a sentence:

* Noun: This is the most common usage. For example: "I love playing games."

* Verb: This is less common, but it can mean to gamble or to engage in a game of chance. For example: "He gamed away all his money."

* Adjective: This is even less common, but it can describe something that is related to a game or games. For example: "This is a game show."

Without context, it's impossible to know which part of speech "game" is.