In modern Indian usage, sanātana dharma is often equated with ‘Hinduism’ as a name, stressing the eternal foundation of it.
"Sanātana dharma." The Concise Oxford Dictionary of World Religions. . Encyclopedia.com. (April 21, 2018). http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/sanatana-dharma
"Sanātana dharma." The Concise Oxford Dictionary of World Religions. . Retrieved April 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/sanatana-dharma