The Ardhanarishvara , a composite androgynous form of the Hindu deities Shiva and Parvati (Shakti) is a philosophical expression of the power and equality of genders. In a more primordial form they are the Linga and Yoni which are the icons of procreation. The concept of Ardhanarishvara seems to have evolved as early as 800 to 900 AD during the Chola period in South India
Bhairava is a fierce manifestation of Shiva associated with annihilation. Bhairava originated in Hindu legends and is sacred to Hindus as well as Buddhists and Bhairava is worshiped throughout India, Sri Lanka and Nepal. He is the wandering form of Lord Shiva who guards the cardinal points. There are 64 Bhairavas. These 64 Bhairavas are grouped under 8 categories and each category is headed by one major Bhairava. The major eight Bhairavas are called Aṣṭāṅga Bhairavas. The Ashta Bhairavas control the 8 directions of this universe. Each Bhairava has seven sub Bhairavas under him, totaling 64 Bhairavas. All of the Bhairavas are ruled and controlled by Maha Swarna Kala Bhairava otherwise known as Kala Bhairava, who is the supreme ruler of time of this universe as per Hindu scriptures. Bhairavi is the consort of Kala Bhairava.Bhairava is also called upon as protector, as he guards the eight directions of the universe. Every Hindu temple usually has a Bhairava idol. and he is the protector of the temple. In Shiva temples, when the temple is closed, the keys are placed before Bhairava. Bhairava is also described as the protector of women.