Kenya's two official languages are Swahili and English. Swahili is also the most widely spoken African language in the world - about 200 million people use it across East Africa. The word 'safari' is Swahili. So is the word 'jenga' (which means 'build').
Each of Kenya's many ethnic groups speaks its own language. Some of the biggest are Kikuyu, Luo, Luhya, Kalenjin and Maasai. A child in one village might speak with grandparents in one language, at school in another, and with friends in a third.
Speaking many languages is normal across most of the world. About two-thirds of people on Earth use more than one language every day. People who speak more than one language are called 'bilingual' (two) or 'multilingual' (many).
When you learn a new language, you don't just learn words. You learn ways of seeing things. In Swahili, the word for 'hello' (Jambo!) literally means 'a thing' - as in 'here's a thing to share'.