15-Letter Words Matching C____T_________

There are 21 15-letter words that match C____T_________. 6 are common words, such as CLAUSTROPHOBIAS and COLLATERALIZING. A rarer one is CREDITABILITIES. In this set, I is the most frequent open letter (21 words). 9 words contain a doubled letter.

Full list 21

claustrophobiascollateralizingcombativenessescompatibilitiescompetitivenesscomputerizationcomputationallycoinstantaneouscarpetbaggeriescatheterizationchemotacticallychemotaxonomieschemotaxonomistchemotherapistscleistogamouslycollateralitiescommutativitiescomputabilitiescomputerphobiasconnaturalitiescreditabilities

About this list

Words
21 (6 common words)
Common example
claustrophobias
Rare example
creditabilities
Doubled letters
9
Ending in S
14
Most frequent letter
I (21)

Questions

How many 15-letter words matching c____t_________ are there?

21. 6 of them are common words.

What is a common example?

CLAUSTROPHOBIAS is among the common words in this set.