Language operates on metaphor: The sound “Br” imparts the sense of “branch”—and the actual branch turns into practical broom or brush: a tool. Attributes of the branch are then recognized: to branch means one turns into several (the first division is of one into two). Then we have the conceptual: branches of government, branches of banks, as well as braiding, bridges, the two halves of the brain.
The word “bride” defines the female marital role as one of the breeder, the brother maker (which bridges two families). A bride’s main man is the groom, a person who normally takes care of horses. Take the “B” of off “bride” and you have….No wonder Gangnam style was so popular.
Branching implies one composed of many, and that’s the relationship between a brick and a brick wall, a slice of bread and a loaf, and wedge of brie and a wheel. There’s also the constraining aspect of branches, which serve as a restriction, for example: braces, a bracelet, and a horse’s bridle.