When & who decided why a word is what it is? Why is a frog called a frog and not a tree.. or an apple not a?

Question

orange? Who named all these words?

Answer 1

It is not decided by a single person and the origin of words mainly dates back to ancient times.The accepted idea about how words spring is that they are mostly derived from what the things sound like,so frogs are called frog because of their sound.