Omkareshvara

One of the 12 Jyotirlinga.

OM/AUM/Pranava

The most sacred mantra, the sound of creation.

Spoken alone AUM.

Spoken with a Mantra Om (Om namah Shivaya, Om namo Narayanaya).

It is also called Pranava – Prana is the breath of life.

Onam

Harvest festival in Kerala.

Read about Onam here
http://utkarshspeak.blogspot.com/2010/08/onam.html