friction Synonyms

detrition clash rubbing renitency resentment resistance resistibility rivalry rub schism scraping rasping quarreling oppugnancy hatred hostility incompatibility incompatibleness inharmoniousness inharmony kilowatt massage obstacle opposition grinding squabbling wrangling wearing away difference of opinion atmospherics turf war quarrelsomeness frottage ill feeling infighting outercourse warfare voltaism strife stroking suant tension traction tractive trituration trouble turmoil voltage radioactivity grating