沸

フツ

わ.く、わ.かす

沸, 氵, 弗, 弓, 丿, 丨

水

seethe, boil, ferment, uproar, breed

沸騰(ふっとう): boiling; seething
沸かす(わかす): (1) to boil; to heat (2) to excite (3) to melt (metal)
沸く(わく): (1) to grow hot (of water, etc.); to boil (2) to be in a state of excitement; to get excited; to take place energetically