volition, willing -- (the act of making a choice; "followed my father of my own volition")
Overview of verb will
The verb will has 3 senses
will -- (decree or ordain; "God wills our existence")
will -- (determine by choice; "This action was willed and intended")
bequeath, will, leave -- (leave or give by will after one's death; "My aunt bequeathed me all her jewelry"; "My grandfather left me his entire estate")
Overview of adj willing
The adj willing has 2 senses
willing -- (disposed or inclined toward; "a willing participant"; "willing helpers")
uncoerced, unforced, willing -- (not brought about by coercion or force; "the confession was uncoerced")