Kickoff and Proem

Kickoff noun - The point at which something begins.

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

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

Kickoff and proem are semantically related. Sometimes you can use "Kickoff" instead a noun "Proem".