How many types of conjunction are there?

[soidog]

Hi Alan,

How many types of conjunction are there please? Some of my books say two (coordinating / subordinating) and some webpages say three:- by adding "correlative conjunction". Is corelative really a type of coordinating conjunction?

[Alan]

Different authorities classify things in slightly different ways, but most would say two main types. Correlatives are essentially only a subset of coordinators.