"Ancestors" and "descendants" in the Russian language

Children feel the Russian language better than adults.
Today I explained to my daughter the meaning of words "предки" ([pretki] "ancestors") and "потомки" ([patomki] "descendants"). Then I asked, "So who are the descendants"? She replied, "those who will be next."(In the Russian language "Потом-ки"(descendants) is like word "потом"(later, next)).
So "ancestors" - who were before (you) "Пред-ки" like word "пред (перед)" = before you.
Well, you see, the Russian language is better understood.