head start vs vantage

head start and vantage both are nouns.

Word	Noun	Adjective	Verb	Adverb
head start	Yes	No	No	No
vantage	Yes	No	No	No

As nouns, vantage is a hypernym of head start; that is, vantage is a word with a broader meaning than head start:

Other hypernyms of head start include advantage.

head start (noun)	vantage (noun)
the advantage gained by beginning early (as in a race)	the quality of having a superior or more favorable position
	place or situation affording some advantage (especially a comprehensive view or commanding perspective)