Collocations for heading - noun

broad, general
Books should be listed under a broader heading such as ‘engineering’.

main, major
chapter, section
subject, topic
letter (esp. BrE)
With the computer, we can print our own letter headings.

come under, fall under
These drugs come under the heading of non-medical substances.

under a/the heading
I've organized what I have to say about unemployment under three main headings.