12-Letter Words Matching ________OG__

There are 18 12-letter words that match ________OG__. 2 are common words, such as HALLUCINOGEN and METEOROLOGIC. A rarer one is VOLCANOLOGIC. 3 words contain a doubled letter.

Full list 18

hallucinogenmeteorologicagglutinogenarchaeologicclimatologicgalactagoguegerontologicherpetologicichthyologicornithologicparahydrogenantiestrogencocarcinogendermatologicmiscatalogedsecretagoguevexillologicvolcanologic

About this list

Words
18 (2 common words)
Common example
hallucinogen
Rare example
volcanologic
Doubled letters
3
Ending in S
0

Questions

How many 12-letter words matching ________og__ are there?

18. 2 of them are common words.

What is a common example?

HALLUCINOGEN is among the common words in this set.