The social sciences approach subjective, inter-subjective, interactive, systemic, and constructed aspects of society as empirically existent systems which can be objectively proven. However, are traditionally referred to as soft sciences. This is in contrast to hard sciences, such as the natural sciences, which may focus exclusively on systemic aspects of nature.
The word "science" is older than its modern use, which is as a short-form for "natural science". Uses of the word "science", in contexts other than those of the natural sciences, are historically valid, so long as they are describing an art or organized body of knowledge which can be taught objectively. The use of the word "science" is not therefore always an attempt to claim that the subject in question ought to stand on the same footing of inquiry as a natural science.