Will can be both a noun and a verb, and has various meanings depending on the context. As a noun, it refers to a person's determination or intention to do something. It can also refer to a legal document that specifies a person's wishes regarding the disposal of their property after death. As a verb, it expresses the future tense or the act of choosing or desiring something. Additionally, it can imply a request or command. Will is a versatile word that encompasses notions of determination, intention, desire, choice, and legal documentation, making it a crucial term in various aspects of language and life.