What's the difference between foreign invaders and colonists?

For Ireland, the foreign invaders were Norman, Anglo-Saxon and so on, and the later colonists were mainly English. For foreign invasion and colonization, it is just that the forms and cognitive levels of invaders are different in different periods. In the same war, because of different national powers in different periods, Ireland could not be ruled. Take Norman as an example, while England realized its political and religious economic interests in Ireland because of its strong national power and continuous improvement of Irish rule and religious rule. The British colonization of Ireland brought control over Ireland, and Ireland's economy, production and religion were deeply influenced and ruled by Britain. The Normans, on the other hand, were not strong enough and met with strong resistance from the Irish, so their invasion could only be abandoned without further progress.

I'm just saying, the main thing is to make money ~ brother problem ~ give it to me ~