#9 "Title shot"

Vince McMahon doesn't like the words "Title shot". In an interview, Mick Foley revealed that Braun Strowman had used the words "title shot" in a promo. When he went backstage, McMahon had shouted at him, saying that he was supposed to say "title opportunity" and not "shot". Can you imagine Strowman being shouted at?
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#8. "Belt" or "Strap"

For WWE, there's a clear difference between a "belt" and a "championship". They emphasise on the word "Championship" because their titles are supposed to represent prestige - the top prizes of the industry. In order to add value to them, they need to be referred to by those names.
If they are to use "belt" or "strap", it cheapens the championship and doesn't give fans the same perception that they intend to give out. Think of the last time you ever heard the words "belt" or "strap" being used on WWE television. Spoiler - you won't remember.