Blue book and Telephone directory

Blue book noun - A register of persons who are socially prominent.

Telephone directory and blue book are semantically related. In some cases you can use "Telephone directory" instead a noun phrase "Blue book".

Telephone directory noun - A directory containing an alphabetical list of telephone subscribers and their telephone numbers.

Blue book and telephone directory are semantically related. You can use "Blue book" instead a noun phrase "Telephone directory".