* Adjective: This is the most common use of "good." It describes a noun.
* Example: "She is a good student." (Describing "student")
* Adverb: "Good" can modify a verb, adjective, or another adverb.
* Example: "She sings good." (Modifying the verb "sings")
* Noun: "Good" can be used to refer to something that is good or beneficial.
* Example: "Do good, not evil."
* Interjection: "Good!" can be used as an exclamation expressing approval or agreement.
* Example: "Good! Let's go."
To determine the part of speech, consider its function in the sentence.