reasonable care vs guardianship

reasonable care and guardianship both are nouns.

Word	Noun	Adjective	Verb	Adverb
reasonable care	Yes	No	No	No
guardianship	Yes	No	No	No

As nouns, guardianship is a hypernym of reasonable care; that is, guardianship is a word with a broader meaning than reasonable care:

reasonable care: the care that a reasonable man would exercise under the circumstances; the standard for determining legal duty
guardianship: attention and management implying responsibility for safety

Other hypernyms of reasonable care include care, charge, tutelage.

reasonable care (noun)	guardianship (noun)
the care that a reasonable man would exercise under the circumstances; the standard for determining legal duty	the responsibility of a guardian or keeper
	attention and management implying responsibility for safety