What people are really afraid of is something that has its own vocabulary and idiom because it strikes them dumb.
You have to have discipline in the words you use, in your vocabulary.
That's why liberalism's vocabulary of “rights” when it comes to abortion rings a little hollow.
1530s, "list of words with explanations," from Medieval Latin vocabularium "a list of words," from Latin vocabulum "word, name, noun," from vocare "to name, call" (see voice (n.)). Meaning "range of language of a person or group" is first attested 1753.