Bumf and Junk mail

Bumf noun - Reading materials (documents, written information) that you must read and deal with but that you think are extremely boring.

Junk mail and bumf are semantically related. In some cases you can use "Junk mail" instead a noun "Bumf".

Junk mail noun - Third-class mail consisting of advertising and often addressed to `resident' or `occupant'.

Bumf and junk mail are semantically related. You can use "Bumf" instead a noun phrase "Junk mail".