10-Letter Words Matching ___T_W____

There are 21 10-letter words that match ___T_W____. 13 are common words, such as BOATSWAINS and DEATHWATCH. A rarer one is WHITEWINGS. In this set, S is the most frequent open letter (17 words). 5 words contain a doubled letter.

Full list 21

boatswainsdeathwatchearthwardsearthworksearthwormsnorthwardsnorthwestspantywaistsouthwardssouthwestswhitewallswhitewaterworthwhilewastewateragatewaresbirthwortskittiwakestoothwortswhitewoodsouttoweredwhitewings

About this list

Words
21 (13 common words)
Common example
boatswains
Rare example
whitewings
Doubled letters
5
Ending in S
15
Most frequent letter
S (17)

Questions

How many 10-letter words matching ___t_w____ are there?

21. 13 of them are common words.

What is a common example?

BOATSWAINS is among the common words in this set.