Cohesion The concept of cohesion is a semantic one; it refers to relations of meaning that exist within the text,and that define it as a text (Halliday Hason,Cohesion in English,1976) 77 Cohesion ◼ The concept of cohesion is a semantic one; it refers to relations of meaning that exist within the text, and that define it as a text. (Halliday & Hason, Cohesion in English, 1976)