spill over vs pullulate

spill over and pullulate both are verbs.

Word	Noun	Adjective	Verb	Adverb
spill over	No	No	Yes	No
pullulate	No	No	Yes	No

As verbs, pullulate is a hypernym of spill over; that is, pullulate is a word with a broader meaning than spill over:

Other hypernyms of spill over include pour, stream, swarm, teem.

spill over (verb)	pullulate (verb)
overflow with a certain feeling	breed freely and abundantly
be disgorged	produce buds, branches, or germinate
	become abundant; increase rapidly
	move in large numbers
	be teeming, be abuzz