Prefatory and Preambulatory

Prefatory adjective - Coming before the main part or item usually to introduce or prepare for what follows.

Preambulatory and prefatory are semantically related. in prefatorial topic. In some cases you can use "Preambulatory" instead an adjective "Prefatory". rare substitute

Prefatory and preambulatory are semantically related. Sometimes you can replace term "Prefatory" with "Preambulatory", this words are similar.