Yes pretty much really using the right definitions, however there's different types of colonialism - the type where you make your own cities and push out the natives (eg Australia, most of the Americas) is gone, as is the type where you find a (nearly?) uninhabited area/island and use it to expand your influence in the area (eg. Mauritius and Singapore with 0 and 150 population at colonisation respectively) leaving only the type where you take over and control the administration of the existing population, eg in India, most of Africa, the USSR in Central Asia (among other places) and in neocolonialism

It's also hard to group them all together as "evil colonialism" too though as the 1st and 3rd are of course pretty evil, there's not a whole lot wrong with the 2nd