intention vs volition

intention and volition both are nouns.

Word	Noun	Adjective	Verb	Adverb
intention	Yes	No	No	No
volition	Yes	No	No	No

As nouns, volition is a hypernym of intention; that is, volition is a word with a broader meaning than intention:

Other hypernyms of intention include willing.

intention (noun)	volition (noun)
an act of intending; a volition that you intend to carry out	the act of making a choice
an anticipated outcome that is intended or that guides your planned actions	the capability of conscious choice and decision and intention
(usually plural) the goal with respect to a marriage proposal