notice
no-tice
noun
A formal announcement or warning, often written or displayed publicly.
"The landlord gave us notice to leave."
verb
To become aware of or observe something, often suddenly, using your senses.
"I noticed a new shop on the high street."
Thesaurus
Synonyms: bill, posting, placard, poster, card, mark, note, detect, find, discover, observe, observation
Antonyms: ignore