The soccer club Celtic, is in Scotland, not Ireland. Celtic as a term can refer to things from Ireland when Celts came to Ireland.
The Celtic Sea is to the south of Ireland and the Irish Sea is to the east of Ireland.
The Celtic Sea is the area of the Atlantic Ocean due south of Ireland. The word Celt, simplified, refers to a group of tribes that originated in Ireland in the Iron ages. This is why the word Celt is associated with Ireland, as the term Gaelic is for Scotland. Therefore, it is called the Celtic Sea, because it is south of the country where Celts live.
Halloween was first celebrated in Ireland by the Celtic pagans. Halloween was the time of harvest and represented the Celtic New Year.
Ireland
The team Glasgow Celtic was formed in Glasgow by an Irishman. There have been always strong connections between Ireland and the team. They have a lot of supporters in Ireland. In terms of race, Celtic people came to Ireland and Scotland around 500BC. So there are Celtic roots in Ireland and Scotland generally. As Glasgow is a Scottish city, there would be people there who can trace their roots to the Celtic people.
Ireland
I think it's Celtic and viking.
Celtic Park is in Derry- its a GAA stadium
If you mean Irish music? Its called 'Celtic' and it is the roots of country music and bluegrass as we know it today.
Celtic
ireland