As nouns the difference between ideology and extremist
is that ideology is doctrine, philosophy, body of beliefs or principles belonging to an individual or group while extremist is extremist.
ideology
Noun
(ideologies)
Doctrine, philosophy, body of beliefs or principles belonging to an individual or group.
* '>citation
The study of the origin and nature of ideas.
Usage notes
Original meaning “study of ideas” (following the etymology), today primarily used to mean “doctrine”. For example “communist ideology” generally refers to “communist doctrine”; study of communist ideas instead being “communist philosophy”, or more clearly “philosophy of communism”; only rarely “ideology of communism”.
Related terms
* ideologic
* ideological
* ideologically
* ideologist
* ideologue
extremist
English
Noun
(
en noun)
a person who holds extreme views, especially one who advocates such views; a radical or fanatic
Adjective
(
en adjective)
holding extreme views, especially on a political subject
of, or relating to extremism