language attritionlanguage barrierlanguage boosterlanguage bossterlanguage boundarylanguage changelanguage codelanguage competencelanguage confederationlanguage contactlanguage deathlanguage developmentlanguage disorderlanguage dispersallanguage egolanguage exchangelanguage facultylanguage familylanguage fluencylanguage focuslanguage formlanguage functionlanguage functionslanguage identifierlanguage impairedlanguage impairmentlanguage institutelanguage lablanguage laboratorylanguage learnerlanguage learner زبان اموزlanguage learninglanguage losslanguage maintenancelanguage melodylanguage nonselectivelanguage noteslanguage of instructionlanguage of tea tablelanguage orderlanguage pedagogylanguage planninglanguage policelanguage policylanguage practicelanguage processorlanguage proficiencylanguage reflexivitylanguage slanguage school