A typology is a system of classification used to organize things according to similar or dissimilar characteristics. [1] Groups of things within a typology are known as "types". [1]
Typologies are distinct from taxonomies in that they primarily address things not categorizable based on empirical and objective characteristics, such as abstract and conceptual ideas or subjective criteria, though the two terms are sometimes used interchangeably. [2]
The earliest evidence for the use of typology as a noun in the English language dates to the 1850s when it was invoked by William Maxwell Hetherington. [3]