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.
If the alleles are different, they and the organism are heterozygous with respect to that gene. The word allele is a short form of allelomorph (other form), which was used in the early days of genetics to describe variant forms of a gene detected as different phenotypes.