Implicit Style Manager
cat
alcoholism
Terrorism
baptism
Ism Ism - 1979 was released on: USA: 1979
colloquialism
Your question belies the answer! Terrorism!
Organism has a 'ism' on the end but organ doesn't
The Thin Blue Line - 1995 Ism Ism Ism 2-2 is rated/received certificates of: UK:PG (video rating) (1997)
Organism has a 'ism' on the end but organ doesn't
"ism" means "a distinctive practice, system, or philosophy, typically a political ideology or an artistic movement." (mac osx dictionary) so many topics in philosophy (like rationalism) are labeled by patterns of thinking about ideas see http://phrontistery.info/isms.html and http://en.wikipedia.org/wiki/-ism for good lists.
Dark-Ism was created in 2005.