* Noun: This is the most common usage. It refers to a scheduled meeting or engagement.
* Example: "I have a doctor's appointment tomorrow."
* Verb: It can mean to assign someone to a position or duty.
* Example: "The committee appointed a new chairperson."
* Adjective: While less common, it can be used to describe something that's been assigned or designated.
* Example: "This is the appointed meeting place."
To determine the part of speech, you need to consider how the word is being used in the sentence.