In a written language, a logogram (from Ancient Greek logos 'word', and gramma 'that which is drawn or written'), also logograph or lexigraph, is a written character that represents a semantic component of a language, such as a word or morpheme. Chinese characters as used in Chinese as well as other languages are logograms, as are Egyptian hieroglyphs and characters in cuneiform script. A writing system that primarily uses logograms is called a logography. Non-logographic writing systems, such as alphabets and syllabaries, are phonemic: their individual symbols represent sounds directly and lack any inherent meaning. However, all known logographies have some phonetic component, generally based on the rebus principle, and the addition of a phonetic component to pure ideographs is considered to be a key innovation in enabling the writing system to adequately encode human language.
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Logograms in the context of Syllabogram
Syllabograms are graphemes used to write the syllables or morae of words. Syllabograms in syllabaries are analogous to letters in alphabets, which represent individual phonemes, or logograms in logographies, which represent morphemes.
Syllabograms in the Maya script most frequently take the form of V (vowel) or CV (consonant-vowel) syllables of which approximately 83 are known. CVC signs are present as well. Two modern well-known examples of syllabaries consisting mostly of CV syllabograms are the Japanese kana, used to represent the same sounds in different occasions. Syllabograms tend not to be used for languages with more complicated syllables: for example English phonotactics allows syllables as complex as CCCVCCCC (as in /ˈstrɛŋkθs/ strengths), generating many thousands of possible syllables and making the use of syllabograms cumbersome.