* Adjective: Describes a noun.
* Example: "That's a real diamond."
* Adverb: Modifies a verb, adjective, or another adverb.
* Example: "He really likes that movie."
* Interjection: Expresses strong emotion.
* Example: "Real! That's incredible!"
To determine the part of speech, you need to look at how it's used in the sentence.