secessionism

As nouns the difference between secessionism and separatism

is that secessionism is the doctrine or policy of secession while separatism is a theory or doctrine which supports a state of separation between organizations, institutions, or other societal groups (e.g. between church and state) or between different political jurisdictions (e.g. a country and its former colony).

As nouns the difference between terms and secessionism

is that terms is while secessionism is the doctrine or policy of secession.

As nouns the difference between secessionist and secessionism

is that secessionist is a person who secedes or supports secession from a political union or an alliance or organisation while secessionism is the doctrine or policy of secession.

As an adjective secessionist

is seceding or supporting secession.

As nouns the difference between secessionism and nationalism

is that secessionism is the doctrine or policy of secession while nationalism is patriotism; the idea of supporting one's country and culture.