Tea was not known in ancient Sefdaania. When introduced in more recent times, neither 'teh' nor 'cha' were used. Instead, a portmanteau word was created, 'caðpǫ̋ȝo', excellent drink.
The word for 'tea' is endemic to Missa, and results from the initial wave of vocabulary generation when the language was still better classified as a code or cipher of English.
There's a word meaning "All kinds of drinks that are made from leaves." but there's no single word for "drinks that are made from leaves of the tea plants Camellia sinensis.)