Chinese characters are logographic symbols that represent syllables. Each character is made up of parts called radicals that provide clues to pronunciation or meaning. It takes years of study for children to learn the 3,000-4,000 characters needed for literacy. Chinese is also a tonal language, meaning the same syllable spoken with different tones can have distinct meanings. For example, "ma" spoken with four different tones can mean mum, hemp, horse, or scold. Greetings also vary based on whether addressing one person or a group.