safekeeping vs responsibility

safekeeping and responsibility both are nouns.

Word	Noun	Adjective	Verb	Adverb
safekeeping	Yes	No	No	No
responsibility	Yes	No	No	No

As nouns, responsibility is a hypernym of safekeeping; that is, responsibility is a word with a broader meaning than safekeeping:

safekeeping: the responsibility of a guardian or keeper
responsibility: the social force that binds you to the courses of action demanded by that force

Other hypernyms of safekeeping include duty, obligation.

safekeeping (noun)	responsibility (noun)
the responsibility of a guardian or keeper	the social force that binds you to the courses of action demanded by that force
	a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct
	the proper sphere or extent of your activities