A** Codeword** is the finite arrangement of binary bits(0,1) which has a specific meaning. For example 1101 is a codeword.

Codewords are used for error-correcting purpose in communication system.

C={1101, 001, 10, 11101}

C is a set of codewords which is a code.

Length of the codeword 1101 is 3.