Search:

Yes, a "lap" is one up and down pass on the strop.

Many strops have a leather component in the front and a separate linen piece on the back, but there are variation on materials.

Your paddle...

The difference between an edge that has been stropped 50 times vs 100 times is vastly different. There is a thread on the site where a member took a magnified photo of a freshly honed razor after 50...