The word "subheadings" is correct and usable in written English.
You can use it when referring to titles or brief descriptions under the main heading of a text, typically used to provide a hierarchical structure to texts. For example, "This research paper is organized into two main sections with the following subheadings: Introduction, Literature Review, Research Methodology, Results, and Discussion."
One textbook's subheadings move depressingly from "More and more suicides at work", to "More and more insecure jobs".
Throughout the day, there are breaking-news updates under the subheadings "entertainment" – including showbiz, music, television, movies, soaps, reality TV, gaming, cult and gay issues – and "media" – comprising broadcasting, digital TV and US TV – as well as quizzes and consumer technology reviews of gadgets.
Modern number theory is a broad subject that is classified into subheadings such as elementary number theory, algebraic number theory, analytic number theory, geometric number theory, and probabilistic number theory.
Using programmatic subheadings (the discovery of world and man; the development of individuality; the state as a work of art; the modern sense of humour), Burckhardt deftly analyzed the daily life of Renaissance Italy, its political climate, and the thought of its outstanding minds.
Mr. Denny, who may have learned a thing or two from Barbara Kruger, has rejiggered some titles, often cribbing from their subheadings to make them catchier.
It's not a classic outline, with indentations and numbered headings and subheadings, but a maze of sentences and paragraphs and notes to himself.
A subheading originally described President Saleh as having been toppled.
(Subheading: "They squander our cash but feed us old rubbish").
The original Star Wars (let's not bother with this Episode IV: A New Hope subheading nonsense) lays its cards on the table with its opening shot: a gigantic, evil-looking spaceship chasing down a far smaller craft.
In the standfirst, 'pity his successor, faced with ill-planned developments that could turn the capital into one of the highest-density cities on the planet' was changed to 'pity his successor, faced with ill-planned developments and vanity projects', and the subheading 'Five of the worst Johnson projects' was changed to 'Five Johnson projects'.
Consider including a subheading "Academic highlights" or "Academic achievements" for any awards, scholarships, special projects or notable extra-curricular activities.
