Proem and Prelims

Proem noun - A short section (as of a book) that leads to or explains the main part.

Prelims and proem are semantically related. In some cases you can use "Prelims" instead a noun "Proem".

Prelims noun - Written matter preceding the main text of a book.

Proem and prelims are semantically related. Sometimes you can use "Proem" instead a noun "Prelims". rare substitute