Inherency is the quality of being inherent or intrinsic to something. However, there are several synonyms for this term that can be used interchangeably depending on the context. For instance, "intrinsic," "innate," and "immanent" are all words that can be used instead of inherency when referring to an inherent quality. "Naturally occurring" is another synonym that can be used to describe something that is essential or inherent within a given context. Other synonyms for inherency include "inbuilt," "built-in," and "integral." These words all convey the idea that something is fundamental or essential, and they can be useful for expressing this concept in different ways.