notice

(noun): The act of observing; perception.
(noun): A written or printed announcement.
(noun): A formal notification or warning.
(noun): Advance notification of termination of employment, given by an employer to an employee or vice versa.
(noun): A published critical review of a play or the like.
(noun): Prior notification.
(noun): Attention; respectful treatment; civility.
(verb): To remark upon; to mention.
(verb): To become aware of; to observe.
(verb): To lavish attention upon; to treat (someone) favourably.
(verb): To be noticeable; to show.

He took no notice of the changes, and went on as though nothing had happened.
I always read the death notices in the paper.
The sidewalk adjacent to the damaged bridge stonework shall be closed until further notice.
I can't work here any longer. I'm giving notice.
I don't mind if you want to change the venue; just give me some notice first, OK?