The term 'Past and Future' can be summarized as the two tenses of time. Past tense is used to describe events that have already happened, while future tense is used to describe events that will happen in the future. The term 'Tenses' is a six-letter word that refers to the different forms of a verb that are used to indicate when an action or state of being occurs or existed. Tenses are used to express past, present, and future time.