Prior to this year the definition of a vaccine would not have included the mRNA so-called vaccines in use today. If you check the current Merriam Webster online dictionary, they have added a definition to include it. The left is able to simply change the definition of words anytime it wants, especially with the common use of online dictionaries. They do not even have to pay people to change books as in the book “1984”.
That’s a good point. It might be worth it to have hard copies of dictionaries, encyclopedias, and definitely history books to compare against.