* Anger: This is a noun, representing an emotion.
* Pavement: This is also a noun, referring to a hard surface.
* Mr. Brown: This is a proper noun, specifically a name.
The phrase itself doesn't form a grammatical unit with a specific word class. It's more like a list of seemingly unconnected words.
To understand the intended meaning, we'd need more context. For example:
* "Anger, pavement, Mr. Brown" could be a list of things someone is thinking about.
* "The anger of the pavement, Mr. Brown" might be a poetic phrase.
Without more information, it's impossible to assign a word class to the entire phrase.