Subheading is a derived term of heading.
As nouns the difference between subheading and heading
is that subheading
is any of the headings under which each of the main divisions of a subject may be subdivided while heading
is the title or topic of a document, article, chapter etc.
As a verb heading is
Other Comparisons: What's the difference?
any of the headings under which each of the main divisions of a subject may be subdivided
a heading or caption subordinate to a main headline, heading, or title especially when inserted as a divider between sections (as of a newspaper or periodical article or story or text of a book)
The title or topic of a document, article, chapter, or of a section thereof.
(nautical) The direction into which a seagoing or airborne vessel's bow is pointing (apparent heading) and/or the direction into which it is actually moving relative to the ground (true heading)
Material for the heads of casks, barrels, etc.
(mining) A gallery, drift, or adit in a mine; also, the end of a drift or gallery; the vein above a drift.
(sewing) The extension of a line ruffling above the line of stitch.
(masonry) The end of a stone or brick which is presented outward.