This document discusses different types of cohesive devices used in academic texts, including reference, ellipsis and substitution, conjunction, and lexical cohesion. It provides examples to illustrate each type of cohesive device. Reference refers to words like pronouns that refer back to other parts of the text. Ellipsis and substitution involve omitting or replacing words to avoid repetition. Conjunctions show relationships between clauses, while lexical cohesion uses similar or related words to link ideas throughout a text. Understanding these cohesive devices is important for comprehending the overall structure and meaning of a text.