Clothes is the general word for the things that you wear such as shirts, dresses, trousers, etc. Wear is used to describe the clothes that are suitable for a particular activity. You need to mention the activity:
These three sound the same, but they are different. Some time talks about a long period of time. Sometime talks about an unknown period or an unspecified period of time. Sometimes talks about how often something happens.
For some time now I have been trying to buy a new house.