Interestingly in my home state of Kerala situated in the south western coast of India. Tea is called Chaaya while tea leaves are called Theyila where ila means leaf. The heavy commercial production of tea was started in Kerala only after the British arrived.
Fellow Keralite here. I can relate to this. Chaaya in Kerala is tea made with tea leaves and milk. Black Tea is called "Kattan Chaaya", literally translates to "strong black tea".