prefatorial vs introductory

prefatorial and introductory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
prefatorial	No	Yes	No	No
introductory	No	Yes	No	No

As adjectives, prefatorial and introductory are synonyms defined as:

Other synonyms of prefatorial include prefatory.

prefatorial (adjective)	introductory (adjective)
serving as an introduction or preface	serving as a base or starting point
	serving to open or begin
	serving as an introduction or preface