Transitional devices are words or phrases that connect sentences and paragraphs. Some common transitional devices that indicate addition are "also", "moreover", and "in addition". Transitional devices that show contrast include "although", "but", and "however". Words like "likewise" and "in a similar way" are used for comparison. Transitional devices that express consequence or result are "therefore", "as a result", and "thus". Examples are provided to illustrate the use of different transitional devices in sentences.