Nails are small pieces of metal with one sharp end and one end that is flat. You use nails to stick things to other things, like nailing a piece of wood to another piece of wood. You use a hammer to hit the flat end of the nails with to push them through something.
Namibia is a country in southern Africa. The capital of Namibia is Windhoek. People in Namibia speak a variety of languages, including English, Afrikaans, and German.
A gap between two things is narrow if the two things are quite close together and there is not a lot of room between them. The street in the picture is very narrow. The opposite of narrow is wide.
