I am a professional keywords analysis. I'm in this job for a long time. I'd like you to do your job if you gave me. So I want to give my evidence.a term that performs as a key, as to the objective of another term, a phrase, passing, or the like. 2. a term used to encipher or figure out a cryptogram, as a design for a transposition procedure or the groundwork for a difficult replacement. 3. Commonly known as catchword.