The Morse alphabet is a system of communication that uses dots and dashes to represent letters and numbers. There are several synonyms for this term, which is also known as Morse code. One synonym is the International Morse Code, which is an international standard for communication. Other synonyms include CW (continuous wave) and radio telegraphy, which are both methods of transmitting Morse code signals using radio waves. Some people use the term Morse key to refer to the device used to send Morse code, while others may simply use the word telegraphy to describe the overall system of communication. Regardless of the synonym used, Morse code remains an important historical method of communication.