feistiness vs get-up-and-go

feistiness and get-up-and-go both are nouns.

Word	Noun	Adjective	Verb	Adverb
feistiness	Yes	No	No	No
get-up-and-go	Yes	No	No	No

As nouns, get-up-and-go is a hypernym of feistiness; that is, get-up-and-go is a word with a broader meaning than feistiness:

Other hypernyms of feistiness include energy, push, adventurousness, venturesomeness.

feistiness (noun)	get-up-and-go (noun)
The quality or state of being tenacious, energetic, spunky.	enterprising or ambitious drive