There is a standard ControlledVocabulary notation.
Elizabeth Fortensky USE Elizabeth Taylor
Elizabeth Taylor UF Elizabeth Fortensky (UF = Use For)
Elizabeth Fortensky USE Elizabeth TaylorWomen’s Pants BT Pants NT Casual Pants NT Dress Pants NT Sports Pants
Women's pants is a subcategory of pants. Casual pants, Dress Pants, and Sports Pants are all subcategories of Women's pants.