What's the difference between a settler and an immigrant?

Cultural geographer Dakota Goodhouse features in 'Éire agus na Chéad Náisiúin'
What’s the difference between a ‘settler’ and an ‘immigrant?’ It's a question I was to consider many times in making my documentary
(Ireland and the First Nations), which explores the role of Irish people in the creation of the United States and to a lesser extent Canada.We looked at this story not just through our eyes but through the eyes of the people we displaced and at times attacked, even massacred. It opens up a new line in the story we tell ourselves about Irish America — one which may not be comfortable viewing for everybody.