I'm currently reading a children's book about numbers with sentences of the form: numberは j1 j2 where j1 and j2 are japanese words and j1 starts sounding similar to number. I am stuck with 4は ...
What is the difference between 発展、発達、and 開発? According to my textbook, they all mean development. I know that they cannot be used interchangeably, but I don't know when to use each of them. I know ...