verbs
be teeming, be abuzz
"The garden was swarming with bees"; "The plaza is teeming with undercover policemen"; "her mind pullulated with worries"
move in large numbers
"people were pouring out of the theater"; "beggars pullulated in the plaza"
produce buds, branches, or germinate
"the potatoes sprouted"
become abundant; increase rapidly
is a type of (narrower)
become bigger or greater in amount
"The amount of work increased"
breed freely and abundantly
is a type of (narrower)
have young (animals) or reproduce (organisms)
"pandas rarely breed in captivity"; "These bacteria reproduce"