12-Letter Words Matching ____OB______

There are 31 12-letter words that match ____OB______. 7 are common words, such as APPROBATIONS and CORROBORATED. A rarer one is PROSOBRANCHS. In this set, I is the most frequent open letter (25 words). 5 words contain a doubled letter.

Full list 31

Common words

approbationscorroboratedcorroboratescorroboratormacrobioticsmicrobiologymicrobreweryastrobiologydiploblasticgnotobioticslactobacillimeprobamates
approbationscorroboratedcorroboratescorroboratormacrobioticsmicrobiologymicrobreweryastrobiologydiploblasticgnotobioticslactobacillimeprobamatesmicrobalanceneurobiologynitrobenzenepaleobiologyphytobiologyradiobiologyreprobationssociobiologyazotobactersfibroblastichydrobiologymicrobrewersmicrobrewingmyeloblasticosteoblasticpaleobotanicpathobiologyphotobiologyprosobranchs

About this list

Words
31 (7 common words)
Common example
approbations
Rare example
prosobranchs
Doubled letters
5
Ending in S
9
Most frequent letter
I (25)

Questions

How many 12-letter words matching ____ob______ are there?

31. 7 of them are common words.

What is a common example?

APPROBATIONS is among the common words in this set.