Joining words, also known as conjunctions, play a crucial role in improving the flow of sentences by linking ideas and making the text more cohesive. These words, such as "and," "but," "because," and "therefore," help connect related thoughts, allowing the reader to follow the progression of ideas smoothly. By using joining words effectively, writers can create more complex and meaningful sentences without overwhelming the reader. If you need help mastering the use of joining words in your writing, BookMyEssay offers expert "joining words assignment help" to enhance your writing skills and ensure clarity in your assignments.