Scouting and Raiding.
Both of them were different terms with different meanings in the Raider world.
Scouting was something that required a small group of strong people to enter a gate and cover the most area they could. They need to write down anything they see and make a detailed report of every good or bad thing inside the gates.
In scouting one needed to just scout the outer parts of the gates, not disturbing the boss layer.
Raiding, on the other hand, required a large group of people with all of them divided into different categories. But that was for high-ranking gates, in case it's a low-ranking gate, the guild could just send some strong raiders to take care of it.
In raids one needed to enter the inner area as they needed to clear the gate.