7-Letter Words Matching _O____X

There are 20 7-letter words that match _O____X. 5 are common words, such as BOOMBOX and COMPLEX. A rarer one is WORKBOX. In this set, O is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 20

boomboxcomplexpostboxsoapboxtoolboxconfluxlockboxpostfixcoalboxcoannexcoteauxfowlpoxhomosexposttaxsonovoxtortrixwoadwaxwoodboxwoodwaxworkbox

About this list

Words
20 (5 common words)
Common example
boombox
Rare example
workbox
Doubled letters
6
Ending in S
0
Most frequent letter
O (12)

Questions

How many 7-letter words matching _o____x are there?

20. 5 of them are common words.

What is a common example?

BOOMBOX is among the common words in this set.