Lord Shiva is also known as Lord Mahadev, Lord Mahesh, and Lord Bholenath.

He is the auspicious and prosperity-bestowing principle. 

Lord Shiva

Lord Shiva

The word Shiva (शिव) has been derived by reversing the letters of the word vash (वश्‌). Vash means to enlighten; thus the one who enlightens is Shiva. Shiva is absolute, self-radiant. 

These are the 12 jyotirlings of Lord Shiva

Somnath Ji in Gujarat

Mahakaleshwar Ji  in Ujaain, Madhya Pradesh

Mallikarjun Ji  in Andhra Pradesh

Omkar / Amaleshwar Ji  in Madhya Pradesh

Kedarnath ji in Himalayas

Bhimashankar Ji in Maharashtra

Vishweshwar Ji in Varanasi, Uttar Pradesh

Tryambakeshwar Ji in Nasik, Maharashtra

Vaidyanath Ji in Jharkhand

Nagesh Ji/ Nageshwara  in Maharashtra

Rameshwaram Ji in Tamil Nadu

Ghrishneshwar Ji  in Maharashtra