Mathematics has a connotation of being technical and difficult to understand. It doesn’t help that much of mathematical teaching tools speak in a foreign language. Now I am not saying that there isn’t a time and place to use fancy-schmancy words, but you don’t walk in to a room with a bunch of people who barely speak English and use super obscure slang that they’ve never even knew that human anatomy could produce. My thesis for anything technical and cognitively demanding is to follow Albert Einstein’s:
“Everything should be made as simple as possible, but not simpler.”
Using plain-speak and making ideas made as simple as possible - even at the cost of sounding juvenile.