The Buddhist holiday of Bodhi; The Wiccan holiday of Solstice; The Asatru holiday of Yule; The Jewish holiday of Hanukkah; the Christian holiday of Christmas; the manmade American holiday of Kwanzaa; the manmade American holiday of Festivus.

a summer holiday is a holiday in the summer

The word holiday is a common noun. A specific holiday such as Christmas Holiday or a name such as Judy Holiday are proper nouns.

There is a really great CD with language lessons by Michel Thomas. His series is a lot cheaper than Rosetta Stone. It's just a effective.

Billie Holiday took the name Holiday from her father, guitarist Clarence Holiday.