What are the two groups of people that involved in Northern Ireland conflict?

The two main groups involved in the Northern Ireland conflict are:

- Nationalists/Republicans: This group primarily consists of Roman Catholics and is in favour of a united Ireland. They argue that Northern Ireland should be part of the Republic of Ireland and oppose British rule.

- Unionists/Loyalists: This group is mainly made up of Protestant descendants of British settlers. They wish for Northern Ireland to remain part of the United Kingdom and oppose Irish reunification.