notice
US /ˈnoʊ.t̬ɪs/
UK /ˈnoʊ.t̬ɪs/

1.
the fact of observing or paying attention to something or someone
:
•
He didn't take any notice of my warnings.
•
Her sudden departure went without notice.
2.
a formal announcement or warning
:
•
The company gave him two weeks' notice.
•
There's a notice on the board about the meeting.