A variety is refers to any variant of language which can be sufficientlydelimited from one another.
Pidgin is a new language which develops in situation where speaker of different language need to communicate but do not have or share common language
Creole is the pidgin that has been used as a native language by succeeding generations, usually with some influence from other languages spoken in the area.
Creole is a pidgin that becomes the first language of the children and the mother tongue of a community
Regional Language is not a distinct language but a variety of a language in a particular area of a country
Minority Dialect is a variety used as a marker of identity, usually alongside a standard variety by the members of particular minority ethnic group
Indigenized Values are spoken mainly as second language in ex colonies with multilingual population
According to Richard Nordquist (2018)a register is defined the way of a speaker uses language differently in different circumstances