babysitting vs tending

babysitting and tending both are nouns.

Word	Noun	Adjective	Verb	Adverb
babysitting	Yes	No	No	No
tending	Yes	Yes	No	No

As nouns, tending is a hypernym of babysitting; that is, tending is a word with a broader meaning than babysitting:

babysitting: the work of a baby sitter; caring for children when their parents are not home
tending: the work of providing treatment for or attending to someone or something

Other hypernyms of babysitting include aid, attention, care.

babysitting (noun)	tending (noun)
the work of a baby sitter; caring for children when their parents are not home	the work of providing treatment for or attending to someone or something

babysitting (adjective)	tending (adjective)
	(usually followed by `to') naturally disposed toward