Răspuns :
Pentru substantive: -er,-ist,-or,-ess,-ment,-ation,-ity/ty,-ness.(sufixe)
Pentru adjective: -y,-ic/ical,-ful,-ous,-able,-less(sufixe)
pentru a forma cuvinte opuse: un-,in-,im-,il,dis- ( prefixe)
campul lexical inseamna cuvintele dintr-o categorie de ex:
School: pen, pencil, book, teacher, etc;
sper ca ai inteles :)