Ключевые слова: america, australia, black, blackboard, board, britain, canada, chalk, chalkboard, classroom, college, communication, education, england, english, english language, great, great britain, handwriting, international, job, kingdom, language, learning, message, note, school, sign, signboard, speak, states, studies, text, texture, training, translation, uk, understanding, united, united kingdom, united states, united states of america, universal, university, usa, white, words, write, writing,