The document discusses academic writing, coherence, and cohesion. It defines academic writing as a formal style of writing used in universities and publications that is discipline-specific and evidence-based. Cohesion refers to the connectedness between ideas in a text through grammatical and lexical elements. Coherence refers to the contextual fitness and orderly sequence of ideas that allows readers to understand the intended meaning. Both cohesion and coherence contribute to maintaining unity and comprehensibility in academic writing, though coherence is more important for conveying meaning to readers. A text with both cohesive ties and coherence provides the best experience for readers.