The word "for" is a preposition that helps us express purpose or reason. For example, when we say, "I bought flowers for my friend," it shows that the flowers are intended as a gift for my friend. It can also indicate a duration of time, like in the sentence, "I will be here for two hours," meaning the speaker will stay for that specific period. Additionally, "for" can indicate support or favor. When someone says, "I am rooting for my team," it means they are cheering and hoping for the success of my team. This versatile word helps clarify relationships between actions and their intended outcomes or beneficiaries.