In fact, first of all, you have to know that there are no two terms in the legal provisions. This is just an unwritten saying!

The two mean the same thing. It is cross-class protection. For example, large companies such as "Coca-Cola" will definitely provide cross-class protection. 45 classes have applied for registration. This is called a joint trademark! Just join together as a protective circle! Smaller companies may not be able to apply for all categories, but they will apply for several related categories!

Another type of defensive trademark is to prevent others from taking side-steps, such as "McDonald's". If you want to use a defensive trademark, you can register several similar names yourself, such as "McDonald's" and "McDonald's" "And so on!" Just as a defense to prevent others from confusing your trademark!

I hope it can help you, and I hope you will adopt it