pursuit vs stalking

pursuit and stalking both are nouns.

Word	Noun	Adjective	Verb	Adverb
pursuit	Yes	No	No	No
stalking	Yes	No	No	No

As nouns, stalking is a hyponym of pursuit; that is, stalking is a word with a more specific, narrower meaning than pursuit:

Other hyponyms of pursuit include tracking, trailing, shadowing, tailing, stalk.

pursuit (noun)	stalking (noun)
the act of pursuing in an effort to overtake or capture	the act of following prey stealthily
a diversion that occupies one's time and thoughts (usually pleasantly)	a hunt for game carried on by following it stealthily or waiting in ambush
an auxiliary activity
a search for an alternative that meets cognitive criteria