Use 'not' to change a yes statement into a no statement. It shows that something is the opposite or does not happen.
I do not like milk.
She is not happy today.
'Not' can be used as a noun in older or special cases to mean a small written message or reminder. This use is less common today.
Write a note to your teacher.
I left a note on the door.
In music, a 'note' means a sound with a specific pitch and time. It is a basic part of music and songs.
She played a high note on the piano.
The note was loud and clear.
A 'note' means a short piece of writing to remember ideas or facts. People use notes in school and work to help learning or planning.
Take notes during the lesson.
I have notes on this topic.
In money, a 'note' is paper money you use to buy things. It is different from coins.
I have a five-dollar note.
She gave me a note to buy bread.
Used after a statement to say the opposite in a funny way. It shows the first idea was not true.
He is very tall — not!
I love homework — not!