Is it infringement to use the words related to the trademark root before the successful registration of the other party's trademark?
The prior right of a trademark is only a comparison with who applied first. If you apply first and they apply later, the right of the trademark belongs to you temporarily. But you did not succeed. If they succeed, they can raise objections to them and refute their trademark application during the trademark announcement. At the same time, you should appeal in accordance with the relevant regulations without notice after the trademark application is issued. Before others successfully apply for a trademark, it is not infringement to use the trademark in the same kind, but it is infringement to use the trademark after successful registration.