preface vs foreword

preface and foreword both are nouns.

Word	Noun	Adjective	Verb	Adverb
preface	Yes	No	Yes	No
foreword	Yes	No	No	No

As nouns, preface and foreword are synonyms defined as:

preface and foreword: a short introductory essay preceding the text of a book

Other synonyms of preface include prolusion.

preface (noun)	foreword (noun)
a short introductory essay preceding the text of a book	a short introductory essay preceding the text of a book

preface (verb)	foreword (verb)
furnish with a preface or introduction