Hispanic ethnic group includes Mexicans and other Spanish-speaking people. My personal understanding, "Hispanic" refers to the group of people whose countries were used to be ruled by Spain and Spanish language & cultures. Hispanic people are descendant from Spanish people, but they are the same. But there's no other term similar with "Hispanic". I mean, for instance, is there any term which can be used to describe the group of French-speaking people, French descendants but they are not Frenchmen.