Synonyms for «core problem»

central main major primary basic key fundamental essential principal surface structural critical common underlying side top routine deep gameplay whole research real inner strong important prime single extra original big value centre secondary technical line reading academic outer small simple great large background chief foundational leading internal compact solid

issue question solution trouble work challenge case difficulty system topic process concern argument matter piece project areas reason game error program rule conflict point condition subjects concept part dilemma power story processor content team center root job course support experience thing business skills priority event premise body performance source