Interesting to learn that Tazuge is the trouser while lawurje is the rope.
In that case 'tazuge' is a trouser simple. (Because, all trousers have a belt loop)
Lawurje is a belt. Accoding to history of belt in wikipedia, it is highlighted that Skateboarders often
wear shoelaces in belt loops to hold pants up instead of a conventional belt. (
http://en.wikipedia.org/wiki/Belt_(clothing). 2010)
So if shoelace is considered as belt because it is use in the belt loop of a trouser, then Tazuge should also be consider trouser given it has a loop for lawurje/belt.