In nomenclature, two or more different names or epithets, based on the same type, published by the same author(s) at the same time for the same taxon; such names are not validly published.
In drug education, assuming that there are motives for drug use, such as the need to be accepted by a group, many educational prevention programs teach alternative methods for satisfying those motives.
One of two or more feasible ways of doing something. Often the term is used to mean new or different from what has been done before. The term is being used increasingly in health care, for example, in connection with financing methods and the organization of services.