self-determination vs free will

self-determination and free will both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-determination	Yes	No	No	No
free will	Yes	No	No	No

As nouns, free will is a hypernym of self-determination; that is, free will is a word with a broader meaning than self-determination:

self-determination: determination of one's own fate or course of action without compulsion
free will: the power of making free choices unconstrained by external agencies

Other hypernyms of self-determination include discretion.

self-determination (noun)	free will (noun)
determination of one's own fate or course of action without compulsion	the power of making free choices unconstrained by external agencies
government of a political unit by its own people