Understanding herbicide chemical nomenclature and formulation is necessary to understand the proper use of herbicides. Since herbicides are chemicals, all of their properties and uses are dependent on their chemical structure, and similar structures have similar properties and uses. Practical application involves basic characteristics of herbicides as a part of the methodology of manufacture and formulation. Field application, likewise, is directly related to the chemical characteristics of the herbicides and the conditions under which they are applied to plants. The most exact name for herbicide is the chemical name. This tells exactly what chemical groups (functional groups) are contained in a herbicide and how these groups are attached together. With this knowledge, one knows exactly what the herbicide is if one can translate this name into chemical structure. Even without any knowledge of the herbicide except for the chemical name, one can estimate its properties and uses if one has the knowledge of the properties of the functional groups which make up the herbicide.