When I was young, several different sources, for different purposes, likened the English language to parts of different engineered items. Motorcycles, houses, and the sort. Words were bricks, with phrases and letters being like mortar and combinations thereof. Forgive me, it has been a long time since I heard the original explanations. Thing is, just as a house can only be as strong as the bricks that are used to construct it (and the other bits and pieces used in other stages of the process, let us not forget), your communication is only as strong as its components, too.