guardianship vs keeping

guardianship and keeping both are nouns.

Word	Noun	Adjective	Verb	Adverb
guardianship	Yes	No	No	No
keeping	Yes	No	No	No

As nouns, guardianship and keeping are synonyms defined as:

Other synonyms of guardianship include safekeeping.

guardianship (noun)	keeping (noun)
the responsibility of a guardian or keeper	the responsibility of a guardian or keeper
attention and management implying responsibility for safety	conformity or harmony
	the act of retaining something