Yes, "downtown" is a compound word. A compound word is formed by combining two separate words to create a new word with a distinct meaning. In this case, "down" and "town" are joined together to form "downtown," which refers to the central business district of a city.
here's a few. downtown, shutdown, and breakdown
downcast downgrade downhearted downhill downplay downside downsize downspout downtime downtown downtrend downtrodden downwind
Downcast, downfall, downhearted, downhill, downpour, downrush, downstream, downtrodden, downwards, downright
downcast downgrade downhearted downhill downplay downside downsize downspout downtime downtown downtrend downtrodden downwind
breakdowncomedowncountdowncrackdownknockdownmeltdownrundownshowdownshutdownsplashdownsundown
BlowdownComedownCooldownDrawdownFacedownHolddownLockdownLookdownMarkdownMeltdownPlaydownPushdownShowdownShutdownSlowdownTakedownTeardownThindownTurndownMore at http://www.scrabblefinder.com/ends-with/down/
download
yes seastorm... more are compound words are land-mark or down-cast
"Ici" is a compound word that can be broken down into two separate words in the French language: "in" and "here."
Down Town Now Ton Won Own Dot Wot All I can think of
As both "down" and "wind" are words, then downwind is a compound word.