FACTION
cabal, faction, junto, camarilla
(noun) a clique (often secret) that seeks power usually through intrigue
faction, sect
(noun) a dissenting clique
Source: WordNet® 3.1
Etymology 1
Noun
faction (countable and uncountable, plural factions)
(countable) A group of people, especially within a political organization, which expresses a shared belief or opinion different from people who are not part of the group.
(uncountable) Strife; discord.
Etymology 2
Noun
faction (uncountable)
A form of literature, film etc, that treats real people or events as if they were fiction; a mix of fact and fiction
Source: Wiktionary
Fac"tion, n. Etym: [L. factio a doing, a company of persons acting
together, a faction: cf. F. faction See Fashion.]
1. (Anc. Hist.)
Definition: One of the divisions or parties of charioteers (distinguished
by their colors) in the games of the circus.
2. A party, in political society, combined or acting in union, in
opposition to the government, or state; -- usually applied to a
minority, but it may be applied to a majority; a combination or
clique of partisans of any kind, acting for their own interests,
especially if greedy, clamorous, and reckless of the common good.
3. Tumult; discord; dissension.
They remained at Newbury in great faction among themselves.
Clarendon.
Syn.
– Combination; clique; junto. See Cabal.
Source: Webster’s Unabridged Dictionary 1913 Edition