pursual vs stalking

pursual and stalking both are nouns.

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

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

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

pursual (noun)	stalking (noun)
the act of pursuing in an effort to overtake or capture	the act of following prey stealthily
	a hunt for game carried on by following it stealthily or waiting in ambush