The word that describes what is used to connect phrases, sentences, paragraphs, or overall ideas in writing is called a "transition." Transitions are words, phrases, or sentences that help to create connections and progressions between different parts of a text. They make the writing flow smoothly and allow the reader to follow along easily. Some common examples of transitional words or phrases include "however," "in addition," "on the other hand," and "therefore." These transitions can be used to show contrast, add information, provide examples, indicate a time relationship, or express cause and effect.
