is a specific kind of: Christian holy day.

is a broader term that covers: 11 November, Martinmas, St Martin's Day | Annunciation, Annunciation Day, Lady Day, March 25 | Michaelmas, Michaelmas Day, September 29 | Candlemas, Candlemas Day, Feb 2 | August 1, Lammas, Lammas Day | Christmas, Christmas Day, Dec 25, Xmas | June 24, Midsummer's Day, Midsummer Day, St John's Day | Pentecost, Whitsunday.

domain region: Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland.