hunger strike vs nonviolence

hunger strike and nonviolence both are nouns.

Word	Noun	Adjective	Verb	Adverb
hunger strike	Yes	No	No	No
nonviolence	Yes	No	No	No

As nouns, nonviolence is a hypernym of hunger strike; that is, nonviolence is a word with a broader meaning than hunger strike:

hunger strike: a voluntary fast undertaken as a means of protest
nonviolence: peaceful resistance to a government by fasting or refusing to cooperate

Other hypernyms of hunger strike include fast, fasting, nonviolent resistance, passive resistance.

hunger strike (noun)	nonviolence (noun)
a voluntary fast undertaken as a means of protest	peaceful resistance to a government by fasting or refusing to cooperate