Outside of Ireland taking up 5/6 of the island, Ireland is not part of the UK but Northern Ireland is.
Differently drop into Northern Ireland than.  You'll love it.
I'm planning a trip to Ireland! I've never been there, so I don't know what to expect! Well I heard it is an island that is in the North Atlantic. An island? I did not know that! Is it the largest in Europe? Third largest actually. Ok thanks, I've also heard of North Ireland and just Ireland, what's the difference?
Politically, Ireland is divided between the Republic of Ireland (officially named Ireland), which covers five-sixths of the island, and Northern Ireland, which is part of the United Kingdom, in the northeast of the island.