Several definitions have been introduced for the concept of 'gender' since its widespread in the middle of the nineties of the 20th century. The concept of 'gender' has developed from a linguistic term/ concept to become a theory and an ideology of a well-defined feminist movement in most civilized societies called "Feminism". The concept of 'gender' has often been used as a sociological saying at first place, as if language was of a secondary importance only. The concept of 'gender' was introduced by social studies in general and sociology, in particular through the study of the social and political reality in an attempt to analyze the roles and responsibilities and obstacles of every man and woman. Besides, the concept of 'gender' involves some radical attitudes that sometimes deal with the relationship between man and woman as a zero-relationship that sometimes calls for, among other things, establishment of a society of 'women' on the pretext that it is the only society that achieves absolute equality between its individuals.