The term COMMON COMMANDMENT WORD is a three-letter word, which is often used in religious texts. It is usually used to refer to the Ten Commandments, which are a set of laws given by God to Moses in the Bible. The most common commandment word is 'THOU, ' which is used to refer to the second person singular pronoun. This word is used to emphasize the importance of the commandments and to remind people to obey them.