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.
morpheme - minimal meaningful language unit; it cannot be divided into smaller meaningful units. 1  language unit, linguistic unit - one of the natural units into which linguistic messages can be analyzed. allomorph - a variant phonological representation of a morpheme; the final sounds of `bets' and `beds' and `horses' and `oxen' are allomorphs of the English plural morpheme.