adverb
Definition: This word is used to ask about the time something happens or to refer to a specific time in the past or future.
Example: When are you going to the party?
conjunction
Definition: A word used to refer to a specific time or period, often introducing a clause that describes an event or situation occurring at that time.
Example: I remember the day when we first met.
noun
Definition: The specific time or date when something happens or is planned to happen.
Example: I will let you know the when of the meeting as soon as I find out.
pronoun
Definition: This word is used to ask about or refer to a specific time something happens or happened.
Example: I will call you when I get home.