輔ける[tasukeru] to help
輔導[hodou] guidance
輔弼[hohitsu] giving the Emperor advice on affairs of state
輔翼[hoyoku] aid
輔佐[hosa] aid

唇歯輔車[shinshihosha] mutual dependence
輔く[tasuku] to help
輔星[hosei] Alcor
輔す[fusu] to appoint
輔佐人[hosanin] assistant