Ключевые слова: abstract, abugida, alphabet, art, backdrop, background, banner, black, blackboard, board, chalk, chalkboard, class, classroom, communication, concept, consonant, education, english, eraser, idea, learn, lesson, letter, ring, school, sign, sketch, student, symbols, teacher, text, thai, thailand, translation, university, waen, wipe, wo, wor, word, words, write, writing,