notice
noun
°The act of observing; perception.
"He took no notice of the changes, and went on as though nothing had happened."
°A written or printed announcement.
"Shall we post a notice about the new policy?"
verb
°To observe or take notice of.
"Did you notice the flowers in her yard?"
°To detect; to perceive with the mind.
"I noticed that the dog hadn't barked the night of the murder."