We don't have synonyms for kalwar yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are kalar, salwar and kalmar.
(n) :
A member of an Indian caste historically found in Uttar Pradesh, Rajasthan, Punjab, Haryana, and other parts of north and central India, and traditionally associated with the distillation and selling of liquor.
(n) :
A member of an Indian caste historically found in Uttar Pradesh, Rajasthan, Punjab, Haryana, and other parts of north and central India, and traditionally associated with the distillation and selling of liquor.