This dictionary contains only 500 words and terms. But these are words and terms that are often found in newspapers, magazines, you hear on the radio. They are often used in their speeches by lecturers, propagandists, agitators. Many readers want to know the exact, scientific explanation of a word or concept. This is very important, especially for our youth: the knowledge of a person expands, he expresses his thought more clearly, understands what he has read more fully, speaks more figuratively and more beautifully. "The word is a commander of human strength," Mayakovsky wrote. The meaning of the word is especially great in our time.