hindu is a person who regards themselves culturally, ethnically, or religiously to the laws of hinduism. are you familiar?
Somewhat I've done extensive studies in theology but did not concentrate much on  hinduism
well it has also been used as a geographical, cultural, and religious identifier for people indigenous to south asia.  the word hindu has evolved over time
It's hard for me to get behind. The beliefs are very different then my own. How many followers do they have?
-Muslim wars. A sense of Hindu identity and the term "Hindu" appears in some texts dated between the 13th and 18th century in Sanskrit and regional languages. The 14th- and 18th-century Indian poets such as Vidyapati, Kabir and Eknath used the phrase "Hindu dharma" (Hinduism) and contrasted it with "Turaka dharma" (Islam). The Christian friar Sebastiao Manrique used the term 'Hindu' in religious context in 1649. In the 18th century, the European merchants and colonists began to refer to
Hindus
Hindus () are persons who regard themselves as culturally, ethnically, or religiously adhering to aspects of Hinduism. Historically, the term has also been used as a geographical, cultural, and later religious identifier for people living in the "Hind" (Indian subcontinent). 
The historical meaning of the term "Hindu" has evolved with time. Starting with the Persian and Greek references to the land of the Indus in the 1st millennium BCE through the texts of the medieval era, the term Hindu implied a