noun:the faculty by which a person decides on and initiates action; a type of legal document
She had a strong will to succeed against all odds.
noun:a legal document expressing a person's wishes regarding the distribution of their property after death
She left a detailed will outlining how her estate should be divided among her children.
verb:to try to make something happen by using your mental powers; to intend or desire for something to happen
I will this pain to go away.
auxiliary verb:used to form the future tense of verbs
They will arrive at the airport tomorrow morning.