Liability and responsibility: two terms which intersect and complete each over. In currently speak, sometimes and in treaties of specialty, appear a confusion than we speak about liability and responsibility, about obligation and duty. To understand the concept of duty must be done a delimitation of these two terms in the activity of the professor.

Răspundere şi responsabilitate: doi termeni care se intersectează şi se completează reciproc. In vorbirea curentă, uneori şi in tratate de specialitate apare o oarecare confuzie atunci cind vorbim despre răspundere şi responsabilitate, despre obligaţie şi datorie. Pentru a inţelege conceptul de datorie, trebuie făcută o delimitare a acestor doi termeni.