7-Letter Words Matching ____T_A

There are 28 7-letter words that match ____T_A. 10 are common words, such as BIRETTA and INERTIA. A rarer one is ZEMSTVA. In this set, I is the most frequent open letter (16 words). 7 words contain a doubled letter.

Full list 28

Common words

birettainertiamahatmamilitiaminutianaphthaplectraregattaricottaspectraamentiaarietta
birettainertiamahatmamilitiaminutianaphthaplectraregattaricottaspectraamentiaariettacomitiagalateakibitkaolestraopuntiashastraberettacymatiahimatiaignatiamozettaphiltrashortiasolatiastrettazemstva

About this list

Words
28 (10 common words)
Common example
biretta
Rare example
zemstva
Doubled letters
7
Ending in S
0
Most frequent letter
I (16)

Questions

How many 7-letter words matching ____t_a are there?

28. 10 of them are common words.

What is a common example?

BIRETTA is among the common words in this set.