1. mouth of a large river affected by tides   oasis   harbor   plateau   estuary   Hint Half-n-half Clue   2. large area of sea partly surrounded by land   plain   gulf   oasis   tributary   Half-n-half Clue   3. sloping, sandy or pebbly, shore of a body of water   delta   island   beach   iceberg   Half-n-half Clue   4. port protected naturally or artificially to provide shelter for ships   cape   tributary   harbor   gulf   Half-n-half Clue   5. low land between hills or mountains   glacier   archipelago   valley   isthmus   Half-n-half Clue   6. river of ice moving downward very slowly   peninsula   plateau   bay   glacier   Half-n-half Clue   7. narrow strip of water connecting two large bodies of water or seas   island   strait   peninsula   estuary   Half-n-half Clue