"Ishvara" is primarily an epithet of Lord Shiva. In Shaivism and for most of the Hindus, "Ishvara" is synonymous with Shiva, sometimes as Maheshvara or Parameshvara. For many Vaishnavites, it is also synonymous with Vishnu. In traditional Bhakti movements, "Ishvara" is one or more deities of an individual's preference (Iṣṭa-devatā) from Hinduism's polytheistic canon of deities. In modern-day sectarian movements such as Arya Samaj and Brahmoism, "Ishvara" takes the form of a monotheistic God. In the Yoga school of Hinduism, it is any "personal deity" or "spiritual inspiration".