This study focuses on the link between coherence and the English language notion of cohesiveness. Cohesion is defined as the way in which different elements of a text or speech are linked together to create a unified and integrated whole. The study identifies the challenges in determining the appropriate level of cohesion for a given text and how factors such as audience, purpose, and context can affect cohesion. The aims of the research are to provide learners with a better understanding of cohesion in English and to demonstrate the importance of cohesion in producing clear and effective communication. The paper is divided into three sections: the first section introduces the problem, aims, scope, procedure, and hypothesis; the second section provides a detailed explanation of the definition, general meaning, models, and types of cohesion; and the third section examines lexical and grammatical cohesion in more detail. The theory argues that English language learners typically don't understand the ideas of cohesion and coherence, which leads to poor writing that is illogical and grammatically incorrect. The research methodology involves data collection from English books, analysis, comparison of essays on cohesion, and consultation with instructors of English. Ultimately, this research highlights the importance of cohesion in achieving coherence and producing effective communication in English. The practical study of grammatical cohesion conducted in the English Department of Sawa University's College of Education aimed to assess students' comprehension of linguistic phenomena such as conjunction, ellipsis, references, and substitution. The study involved 54 participants, comprising of 36 females and 18 males, who were presented with 18 different prompts and asked to identify the linguistic phenomenon present in each response. The study's analysis revealed that participants identified these linguistic phenomena differently for each prompt, with some responses predominantly identified as conjunction, while others were predominantly identified as ellipsis or references. These findings provide insight into how individuals interpret and use language and can contribute to the development of linguistic theories and models.