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.
However, most genetic variations result in little or no observable variation. The word allele is a short form of allelomorph (other form, a word coined by William Bateson), which was used in the early days of genetics to describe variant forms of a gene detected as different phenotypes.