* Adjective: Describing something as less important, smaller, or of lesser age.
* Example: "The minor details of the plan are still being worked out."
* Noun: Referring to a person under the legal age of adulthood.
* Example: "The minor was apprehended by the police."
* Noun: Referring to a musical key or scale.
* Example: "The piece was written in the key of A minor."
To determine the part of speech, you need to look at how it's being used in the sentence.