The scientific name of "frog" is tiger frog.

Tiger frog lives in rice fields and eats pests. The little frog is called "Haw …" and the big frog is called "Goo Goo …".

Domestic chickens eat bugs, chicks chirp and big hens growl.

So tiger frog and frog are chickens in the field, commonly known as "frogs". Frogs are generally called frogs by southerners, just as corn is called corn by northeast people. Actually, it's the same thing. As for the classification of frog species, it should be another question. Personally, frogs and frogs are both general terms for frogs.

Tiger frog is the real frog. Frogs are black-spotted frogs. This is the difference and classification of babies. Because it is difficult to observe the black-spotted frog and the tiger frog without careful distinction, and they are somewhat similar, the frog has become the name of the southern frog, just like the northeast people call it corn popcorn. Actually, there are many kinds of corn. You are right in the last sentence, "It is because too many people think frogs are frogs that frogs are called frogs."