Current activities in environmental conservation and management frequently address various problems referring to two opposing objects: 1. those derived from primary nature, and (2) those generated by humans, both material and spiritual. Fluent flow of information between natural sciences and humanistic branches suffers from inconsistent terminology, which is particularly chaotic in description of the two opposing poles encountered in every human landscape. These antithetic poles are most frequently called "nature” and "culture”, but other terminological variants, including an array of synonyms and homonyms, are also encountered. In the international context, activities of UNESCO have been most useful in innovations and unification of various concepts and terms applied in international projects. Further cooperation and coordination will be needed in harmonization of terminology between natural sciences and humanistic professions.