Commentalist 

A constant commentary of all things minor, unnecessary and irrelevant, derived from an obsessive need to comment on everything with no particular purpose or outcome.

“That’s a talking point”: said the Commentalist, after no particular topic of conversation.

Commentalist by RMB78 November 23, 2017

commentariat 

A collective term referring to news analysts and commentators.

The war on terror is consistently referred to as the single most divisive political issue by the commentariat.

commentariat by Bowtie42 August 26, 2007

commensalism 

A symbiotic relationship between two organisms of different species in which one derives some benefit while the other is unaffected.

Barnacles attach themselves to the shells of crabs. The barnacles recieve a home and transportation.

commensalism by Diana Stephens February 14, 2005

communalist 

A follower of Murray Bookchin's political ideology, which according to him was "a theory of government or a system of government in which independent communes participate in a federation". A form of libertarian socialism, based on local assemblies of no more than 150 families per group who meet up regularly to discuss the group's concerns and what they need doing locally. Anything they're unable to do themselves, they send a pair of delegates up to an area assembly, where if other local assemblies buy into the idea, enough resources & labour may be found to get it done.

"Abdullah Öcalan based his ideas on Bookchin's communalist ideology"

communalist by Skiamakhos August 30, 2020

Commentatition 

A competition between 2 or more people to have the most liked comment on someone else's status.

Bill and Fredrick had a commentatition on Jorge's facebook status, and Bill won with 12 likes.

Commentatition by Straightuphoss August 2, 2011