13-Letter Words Matching ___OB________

There are 18 13-letter words that match ___OB________. 6 are common words, such as ACROBATICALLY and AUTOBIOGRAPHY. A rarer one is STROBILATIONS. In this set, I is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 18

acrobaticallyautobiographydisobediencesdisobedientlynonobligatorynonobservanceagrobiologiesignoblenessesmycobacteriumstrobilaceousaerobiologiescryobiologiescryobiologistglioblastomashexobarbitalsmycobacterialsecobarbitalsstrobilations

About this list

Words
18 (6 common words)
Common example
acrobatically
Rare example
strobilations
Doubled letters
2
Ending in S
10
Most frequent letter
I (17)

Questions

How many 13-letter words matching ___ob________ are there?

18. 6 of them are common words.

What is a common example?

ACROBATICALLY is among the common words in this set.