Necessary product

One meaning of the Swahili word, "tena", is "again". I was amused at the implications of using this product again and again. Heather informs me that it also means "furthermore." I'm not sure the implications of that are any better.

"Sifa" means praise in Swahili. Zacky, a colleague, informs me that the product must be worthy of praise - or famous.