Note is a common English word with multiple meanings:
1. A brief record of facts, topics, or thoughts, written down as an aid to memory.
2. A short informal letter or written message.
3. A single tone of definite pitch made by a musical instrument or voice.
4. A particular quality or tone that reflects or expresses a mood or attitude.
5. A banknote or piece of paper money.
6. Importance or distinction.