Structural synonymy is exhibited by sets of expressions that are capable of conveying the same denotative content but are differently constructed and hence have slightly different meanings. Synonymous structures, due to the general complexity of syntactic phenomena, are not quite coterminous semantically, stylistically, or pragmatically; hence, they are not synonyms in the strict sense. It is exactly such differences that make it possible for them to offer a choice for the language user. Formal variants, in the author's view, are sets of syntactic structures that do not exhibit any semantic diversity despite their formal differences; hence, they are freely interchangeable (or, in the case of historical phenomena, are assumed to be such on t...