scrappiness vs get-up-and-go

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

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

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

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

scrappiness (noun)	get-up-and-go (noun)
the trait of being scrappy and pugnacious	enterprising or ambitious drive
The quality or state of being tenacious, energetic, spunky.