Vocabular and Wordbook

Vocabular adjective - Of or relating to words or language.

Wordbook and vocabular are semantically related. In some cases you can use "Wordbook" instead a noun "Vocabular".

Wordbook noun - A reference book giving information about the meanings, pronunciations, uses, and origins of words listed in alphabetical order.

Vocabular and wordbook are semantically related. Sometimes you can replace term "Vocabular" with "Wordbook", this nouns are similar.