The particular contrasts which are phonemic in a language can change over time. At one time, [f] and [v], two sounds that have the same place and manner of articulation and differ in voicing only, were allophones of the same phoneme in English, but later came to belong to separate phonemes. This is one of the main factors of historical change of languages as described in historical linguistics. COUNT 3
QSN1 What kind of linguistics describes how factors of languages change in history? ANS1 historical QSN2 With the passage of time what particular things phonemic in a language are known to change? ANS2 contrasts QSN3 In the past sounds that now belong to separate phonemes were allophones of what kind of phoneme in English? ANS3 the same phoneme