Subheadline vs. Headline: What's the Difference?

Subheadline and Headline Definitions
Subheadline
A smaller, secondary headline that usually elaborates on the main headline above it.
Headline
The title or heading of an article, especially in a newspaper, usually set in large type.
Headline
Often headlines An important or sensational piece of news.
Headline
A line at the head of a page or passage giving information such as the title, author, and page number.
Headline
To supply (a page or passage) with a headline.
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Headline
To present or promote as a headliner
The Palace Theater headlines a magician.
Headline
To serve as the headliner of
He headlines the bill.
Headline
(journalism) The heading or title of a magazine or newspaper article.
The headline on today's newspaper reads "John Doe Wins Wood-Splitting Competition."
Headline
The line at the top of a page containing the folio or number of the page.
Headline
(entertainment) The top-billed attraction.
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Headline
(nautical) A headrope.
Headline
To give a headline to a page or section of a text.
Headline
To present as the main attraction; to have top billing, to be the main attraction.
Headline
The line at the head or top of a page.
Headline
See Headrope.
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Headline
A title for an article in a newspaper, sometimes one line, sometimes more, set in larger and bolder type than the body of the article and indicating the subject matter or content of the article.
Headline
A similar title at the top of the newspaper indicating the most important story of the day; also, a title for an illustration or picture.
Headline
To mention in a headline.
Headline
To furnish with a headline (senses 1, 3, or 4).
Headline
To publicise prominently in an advertisement.
Headline
The heading or caption of a newspaper article
Headline
Publicize widely or highly, as if with a headline
Headline
Provide (a newspaper page or a story) with a headline