adjective
Definition: This word is used to emphasize a specific thing or person that is close by, often used with 'this' or 'these'.
Example: This here book is my favorite.
adverb
Definition: This word is used to indicate a specific location or position, often referring to the place where the speaker is or where something is happening.
Example: Please sit here while you wait for your appointment.
interjection
Definition: This word is used to get someone's attention, to show agreement, or to indicate presence when called.
Example: When the teacher called my name, I said 'here' to let her know I was present.
noun
Definition: A word used to refer to the present location or time.
Example: I left my bag here on the table.