Frote :: Frote (v. t.) To rub or wear by rubbing; to chafe.
Froterer :: Froterer (n.) One who frotes; one who rubs or chafes.
Froth :: Froth (n.) The bubbles caused in fluids or liquors by fermentation or agitation; spume; foam; esp., a spume of saliva caused by disease or nervous excitement..
Froth :: Froth (n.) Any empty, senseless show of wit or eloquence; rhetoric without thought..