spillover vs consequence

spillover and consequence both are nouns.

Word	Noun	Adjective	Verb	Adverb
spillover	Yes	No	No	No
consequence	Yes	No	No	No

As nouns, consequence is a hypernym of spillover; that is, consequence is a word with a broader meaning than spillover:

spillover: (economics) any indirect effect of public expenditure
consequence: a phenomenon that follows and is caused by some previous phenomenon

Other hypernyms of spillover include effect, event, issue, outcome, result, upshot.

spillover (noun)	consequence (noun)
(economics) any indirect effect of public expenditure	having important effects or influence
	the outcome of an event especially as relative to an individual
	a phenomenon that follows and is caused by some previous phenomenon