moderator vs presiding officer

moderator and presiding officer both are nouns.

Word	Noun	Adjective	Verb	Adverb
moderator	Yes	No	No	No
presiding officer	Yes	No	No	No

As nouns, presiding officer is a hypernym of moderator; that is, presiding officer is a word with a broader meaning than moderator:

As nouns, presiding officer is a hypernym of moderator; that is, presiding officer is a word with a broader meaning than moderator:

moderator: in the Presbyterian church, the officer who presides over a synod or general assembly
presiding officer: the leader of a group meeting

moderator (noun)	presiding officer (noun)
someone who mediates disputes and attempts to avoid violence	the leader of a group meeting
someone who presides over a forum or debate
in the Presbyterian church, the officer who presides over a synod or general assembly
any substance used to slow down neutrons in nuclear reactors