is  an umbrella term used to describe a number of definitions. For example, noise, in a derogatory fashion may imply the production of sound, of music or singing is unwanted and simply seen as a disturbance of the otherwise peaceful environment.
In linguistics, an allomorph is a variant form of a morpheme, that is, when a unit of meaning varies in sound without changing meaning. The term allomorph explains the comprehension of phonological variations for specific morphemes.
1 CSLI, 2004). 2  Complementary Distribution.  3 The indefinite article is a good example of a morpheme with more than one allomorph. 4  It is realised by the two forms a and an. 5  The sound at the beginning of the following word determines the allomorph that is selected.