15-Letter Words Matching __OR___________

There are 13 15-letter words that match __OR___________. 2 are common words, such as AMORPHOUSNESSES and REORGANIZATIONS. A rarer one is SPORANGIOPHORES. 5 words contain a doubled letter.

Full list 13

amorphousnessesreorganizationsbioremediationschoriocarcinomaodoriferousnesschordamesodermschorioallantoicchorioallantoisfloriculturistsfloriferousnessreorchestratingreorchestrationsporangiophores

About this list

Words
13 (2 common words)
Common example
amorphousnesses
Rare example
sporangiophores
Doubled letters
5
Ending in S
9

Questions

How many 15-letter words matching __or___________ are there?

13. 2 of them are common words.

What is a common example?

AMORPHOUSNESSES is among the common words in this set.