Pledge, Oath, Covenant
Noun and する verb
せいやく
こちらが誓約書となっておりまして、こちらとこちらにサインをして頂く必要があります。
Here is the written pledge. You need to sign it here and here.
A vow promise is the promise that you made with your vow. It's the oath you sweat to keep!
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.