What is the difference between mapping and function?

Mapping is a synonym of function. In context|mathematics|lang=en terms the difference between mapping and function is that mapping is (mathematics) a function that maps every element of a given set to a unique element of another set; a correspondence while function is (mathematics) a relation in which each element of the domain is associated with exactly one element of the codomain. In context|biology|lang=en terms the difference between mapping and function is that mapping is (biology) the process of locating genes on a chromosome while function is (biology) the physiological activity of an organ or body part. In context|computing|lang=en terms the difference between mapping and function is that mapping is (computing) assigning a pc to a shared drive or printer port on a network while function is (computing) a routine that receives zero or more arguments and may return a result. As nouns the difference between mapping and function is that mapping is the process of making maps while function is what something does or is used for. As verbs the difference between mapping and function is that mapping is (map) while function is to have a function.

What is the difference between function and service?

As nouns the difference between function and service is that function is what something does or is used for while service is an event in which an entity takes the responsibility that something desirable happens on the behalf of another entity or service can be service tree. As verbs the difference between function and service is that function is to have a function while service is to serve.