As nouns the difference between colonialist and colonialization
is that colonialist is an advocate of colonialism while colonialization is bringing into subjection or subjugation, and implies the subjugation or pacification of a people, and taking of a pre-populated land.
As an adjective colonialist
is of or pertaining to colonialism.
colonialization
English
Noun
(
en noun)
Bringing into subjection or subjugation, and implies the subjugation or pacification of a people, and taking of a pre-populated land.
See also
*colonization
*colonisation
References
*[http://dictionary.reference.com/browse/colonialization]