Ключевые слова: agriculture, areca, asia, asian, background, betel, betle, brown, calcium, chewing, color, culture, dried, dry, eat, food, fresh, fruit, green, gum, herb, herbal, material, medical, medicinal, medicine, myanmar, natural, nature, nut, palm, palmae, peanut, piper, plant, raw, ripe, seed, southeast, spitting, substance, sun, sunshine, texture, thai, thailand, tradition, traditional, tree, tropical,