breed vs pullulate

breed is a noun but pullulate is not a noun.

Word	Noun	Adjective	Verb	Adverb
breed	Yes	No	Yes	No
pullulate	No	No	Yes	No

As verbs, pullulate is a hyponym of breed; that is, pullulate is a word with a more specific, narrower meaning than breed:

breed (noun)	pullulate (noun)
a special type
a special variety of domesticated animals within a species

breed (verb)	pullulate (verb)
have young (animals) or reproduce (organisms)	breed freely and abundantly
copulate with a female, used especially of horses	produce buds, branches, or germinate
cause to procreate (animals)	become abundant; increase rapidly
call forth	move in large numbers
	be teeming, be abuzz