Hi guys, I have a doubt about a word "vocabulary". For example: I use my explanations in power point presentation, but a student of mine asked about the word "vocabulary" which I put in one slide just to explain the "vocabulary" from the book. In fact, I could say "vocabularies" to explain those ones from the book, or just can be used "vocabulary" to explain them?
The word "vocabularies" in plural form only can be used to refer about two languages or more, can't it?
If you are using words from one book, then use "vocabulary."
Many words form one vocabulary.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.