Code book
Code words and code book are semantically related In some cases you can replace phrase "Code words" with "Code book", this phrases are similar.
Code words
Code book and code words are semantically related in secret word topic. You can use "Code book" instead a noun phrase "Code words".
Mutual synonyms
Cite this Source
Code words and Code book. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/code_book/code_words
Code book & Code words. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/code_book/code_words>.
Code words or Code book. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/code_book/code_words.
Google Ngram Viewer shows how "code book" and "code words" have occurred on timeline