List of Sinhala words of Tamil origin
Sinhala words of Tamil origin came about as part of the more than 2000 years of language interactions between Sinhala and Tamil in the island of Sri Lanka, as well as through Dravidian substratum effect on the Sinhala language. According to linguists, there are about 900 Tamil words in Sinhala usage.
Source: Wikipedia — List of Sinhala words of Tamil origin (CC BY-SA 4.0)