9-Letter Words Matching ___D__U__

There are 19 9-letter words that match ___D__U__. 10 are common words, such as BIRDHOUSE and DUODENUMS. A rarer one is SANDSPURS. In this set, S is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 19

birdhouseduodenumsfoodstuffhardboundlaudanumsloudmouthpendulumsroadhousespadefulswoodchuckcandytuftfeedstuffheadcountlabdanumsreadjournwindboundwoodlousecardamumssandspurs

About this list

Words
19 (10 common words)
Common example
birdhouse
Rare example
sandspurs
Doubled letters
4
Ending in S
7
Most frequent letter
S (12)

Questions

How many 9-letter words matching ___d__u__ are there?

19. 10 of them are common words.

What is a common example?

BIRDHOUSE is among the common words in this set.