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Bi is

Bi (more precisely, the letter “bi”) is a linguistic concept that is one of the basic elements of speech, phonemes. This concept combines phonemes that have two different meanings, for example, in Russian, and sound complexes with two sounds of the same quality, for example. Lit. in Russian (“bird”, “six”, “blood”), vowel letters differ in duration. In Finnish I. the letters “ä-ö” differ in their sonority. It is contrasted to any phoneme by the number of sounds. Noun. It is correlated with the phenomenon it denotes according to the principle of dichotomy. Usually has an independent paradigm, expressed in a grammatical category.