How bout you wait until you get in the field & you will learn the terms instead of asking on a forum? Last thing we need is a new unexperience guy join the crew as an groundman or ape & THINK he knows shit. As for as grunt being a groundman. That was back in old days when groundman were considered stupid & just labor. This is the 20th century! No respectable groundman going to allow you to call him/her a damn grunt! Get that term out of your head, but you don't know any better...