The functional approach to natural language (FANL) emerged in the late 1960s. It focused on the use and the sub-use of language expressions, taking into account role of the language context and the extra-linguistic situation of a given statements. This approach referred, both conceptually and methodologically, to the tradition of British analytical philosophy of language on the one hand, and to the achievements of the Lvov-Warsaw School on the other. It seems that despite the passage of more than half a (...) century since its inception, this approach has lost nothing of its relevance and its cognitive value, and may even provide inspiration for the exploration new research areas concerning the formulation of language utterances. The aim of this article is to show the potential applications of the FANL as a specific semiotic concept in the field of the philosophy of social sciences. The paper points out how the functional conception can be successfully used in methodological analyses of the logical methodology of social sciences. The case studies presented in the article refer to the research practice of social sciences. Examples of the use and sub-uses of terms are discussed in the light of the polyparadigmatic structure of social sciences and the differences in research patterns accepted by given scientific collectives. (shrink)