Okay kiddo, so you know how sometimes when we go to church or other places of worship, people give each other a hug or handshake? Well, in some churches, they have something called a "kiss of peace".
This is when people turn to the people around them and give them a friendly hug or kiss on the cheek (kind of like when we say hello to our family and friends). This is a way for people to show that they love and care for one another, and it reminds them that they are all part of the same community.
It's important to remember though, that not everyone feels comfortable giving a kiss or hug, and that's okay too. Some people might prefer to just wave or give a high-five instead. The most important thing is to show respect and kindness to one another.