It means the same thing happens again and again. The former appears a little more frequently than the latter. For example, a traffic accident happens once or twice a month at an intersection, no problem. If there are three or four traffic accidents a month, it will be more appropriate. I just gave an example above. These two words are based on the speaker's judgment, that is to say, the usage will vary from person to person, or in this case of traffic accident, that is to say, people think that this incident often happens, but it just stays in the impression, so it is more appropriate to use ししばばしば々, if the frequency is too high, it is even worrying.

Ge and それ

When referring to plural people or things, the latter has a meaning that highlights the difference between people or things. take for example

Cite international, international and national names.

In this sentence, the former is used to label the luggage separately. For example, I have two boxes of clothes, and it is enough to write "clothes" on the famous brand according to the contents.

When using the latter, you must write different words when you want to make a famous brand. Even if both boxes are clothes, write "underwear" and "coat" to distinguish them.