12-Letter Words Containing OSM

There are 18 12-letter words that contain OSM. 6 are common words, such as COSMETICALLY and COSMETICIANS. A rarer one is OSMOLARITIES. In this set, I is the most frequent open letter (17 words). 1 words contain a doubled letter.

Full list 18

cosmeticallycosmeticianscosmogonistscosmologicalcosmologistscosmopolitancosmogonicalcosmographercosmonauticscosmopoliteschemiosmoticcosmeticizedcosmeticizescosmochemistcosmographiccosmopolisesosmolalitiesosmolarities

About this list

Words
18 (6 common words)
Common example
cosmetically
Rare example
osmolarities
Doubled letters
1
Ending in S
9
Most frequent letter
I (17)

Questions

How many 12-letter words containing osm are there?

18. 6 of them are common words.

What is a common example?

COSMETICALLY is among the common words in this set.