Bulgarians move their heads sideways to indicate agreement. They nod to express disagreement. In a multicultural class, more examples will be easily generated by the students themselves. Ill-funded researchers on the East Coast made an early attempt to confront the spread of the meme virus but received the cold shoulder from the authorities. Because the words language and lingo have popular connotations.
Language is a subject of respect and study whereas lingo is a source of irritation.
A math teacher enters a class on the first day of a school year. Mathematics is a very useful tool which, nowadays, is being employed not only by aeronautic engineers but by biologists, sociologists, futures traders, and even by dentists to compute the interest on their mortgages. The teacher then proceeds to demonstrate discrepancies between the math lingo and the natural language as an example of difficulties that lurk ahead in the course of the study and will, no doubt, confuse the students. The teacher starts with a quote. The teacher then adds that mathematics draws its power from a special language.