Not necessarily, if a TM is only linked to one brand then you wouldn't be able to use it. Especially if it was a made up brand name.
Dictionary words can be trademarks, so if you want to use one then it can't be related to another brand/company.
If in doubt consult a Lawyer.
Can I Trademark Dictionary Words?
And the answer to that question is, yes, as long as you are not trying to to register as a trademark the words that describe what it is that you do.
So Apple is a registered trademark, but Apple did not get trademark for apples. They got their trademark for stuff related to computers. Same thing with Windows. Windows is a dictionary word, but they are not in the business of selling windows, they are in the business of selling software.
Likewise, you can't trademark the word Chair if you’re selling chairs, but you can easily register the trademark Chair, if you're selling apples.
Can't thank you enough for such a clear explanation.
Just because the name is a dictionary word does not necessarily mean that you can’t trademark it. You have to be careful to make sure that the name does not describe, or doesn't point to the specific product or service that you’re using and trying to protect as a trademark.
But just because it's found in a dictionary doesn't mean that it can't be trademarked.
https://trademarkfactory.ca/faq/can-i-trademark-dictionary-words
https://www.google.com/search?q=Dictionary+words+can+be+trademarks