go-getter vs ball of fire

go-getter and ball of fire both are nouns.

Word	Noun	Adjective	Verb	Adverb
go-getter	Yes	No	No	No
ball of fire	Yes	No	No	No

As nouns, go-getter and ball of fire are synonyms defined as:

Other synonyms of go-getter include whiz-kid, whizz-kid.

go-getter (noun)	ball of fire (noun)
someone whose career progresses rapidly	someone whose career progresses rapidly
	a highly energetic and indefatigable person