謂われ[iware] reason
謂わば[iwaba] so to speak
所謂[iwayuru] what is called
謂う[iu] to say
謂う所の[iutokorono] what is called

過ちて改めざる是を過ちと謂う[ayamachitearatamezarukorewoayamachitoiu] to err and not change one's ways, this is what it is to err (from Analects of Confucius)
謂れない[iwarenai] unjustified
謂れ因縁[iwareinnen] origin
謂れのない[iwarenonai] unjustified

課す[kasu] to levy
課する[kasuru] to levy
課員[kain] section staff
課外[kagai] extracurricular
課業[kagyou] schoolwork

課金[kakin] charges
課制[kasei] section system (companies)
課税[kazei] taxation
課税控除[kazeikoujo] tax exemption

切諌[sekkan] admonition
直諌[chokkan] personal admonition
諌める[isameru] to remonstrate
諷諌[fuukan] indirect remonstrance

屍諌[shikan] admonishing (one's master) at the cost of one's life
諌止[kanshi] dissuasion
諌言[kangen] admonition
諌め[isame] remonstrance