discriminate: to make a difference in treatment or favor on a basis other than individual merit
prejudice: 1 : injury or damage resulting from some judgment or action of another in disregard of one's rights; especially : detriment to one's legal rights or claims
2 a (1) : preconceived judgment or opinion (2) : an adverse opinion or leaning formed without just grounds or before sufficient knowledge b : an instance of such judgment or opinion c : an irrational attitude of hostility directed against an individual, a group, a race, or their supposed characteristics
discrimination: 3 a : the act, practice, or an instance of discriminating categorically rather than individually b : prejudiced or prejudicial outlook, action, or treatment