Willing
Part of speech: verb
Definition: To wish, desire.
Part of speech: adjective
Definition: Ready to do something that is not (can't be expected as) a matter of course.
Part of speech: noun
Definition: The execution of a will.
Example sentence: The first requisite of a good citizen in this republic of ours is that he shall be able and willing to pull his own weight.
Volitional
Part of speech: adjective
Definition: done by conscious, personal choice; not based on external principles.done intentionally, not by accidentpertaining to volition