How to say “introduction” for a book?

[ZWLearner]

How do you say “introduction” such as a section or chapter of a book. I see many choices such as:

序言
导言
引言
前言

 

What is the difference among these words? Are there other words? Which one is correct?

[Momo220]

Introduction should be 简介 or 介绍

 

序言/前言 is "preface"

[杰.克]

序言  is preface 

 

as in the pages before a book starts

 

 

[Lu]

For some reason this thread is attracting spam (I really don't understand why). I'm closing it, but if anyone has anything to add, just PM me (or 'report' this post) and I'll reopen it.