9-Letter Words Matching W_____U__

There are 12 9-letter words that match W_____U__. 6 are common words, such as WAREHOUSE and WESTBOUND. A rarer one is WATTHOURS. In this set, O is the most frequent open letter (11 words). 4 words contain a doubled letter.

Full list 12

warehousewestboundwhiteoutswolfhoundwoodchuckworkhousewashhousewaterbuckwindboundwoodlousewatchoutswatthours

About this list

Words
12 (6 common words)
Common example
warehouse
Rare example
watthours
Doubled letters
4
Ending in S
3
Most frequent letter
O (11)

Questions

How many 9-letter words matching w_____u__ are there?

12. 6 of them are common words.

What is a common example?

WAREHOUSE is among the common words in this set.