Use the adjective frequent to describe something done often and at regular intervals. If your family likes to read, you may be a frequent visitor to the library. You may also have frequent arguments with your family about who gets to read a book first.
The adjective form of frequent also means regularly and often encountered. If you live on the windward side of Oahu, Hawaii, you may experience frequent rain showers. As a verb, frequent means to be a regular visitor or to patronize. You can frequent the trails of the National Parks. You may prefer to frequent locally-owned businesses.