Conjunctions or "Joined up writing"

If you want to be rude about somebody's ability to express themselves and indicate that they can't say more than one complete sentence at a time, then you could say: they can't even string two sentences together. Now, string together is a sort of knitting expression suggesting that different parts of a material you're making are attached one to the other. Mind you, there's nothing wrong with short simple sentences all in a row. They can be appealing but sometimes you want to expand your ideas and that's when you make use of the joining words, called "conjunctions". They come in different shapes and sizes with of course different meanings and uses. They start small like "and", "but" and "as" growing into the larger varieties like "though" and "although".