A running headline is a common term used in journalism to describe a secondary headline that is smaller and appears under the main headline of an article. This technique is often used to provide additional context or information about the topic being discussed. Synonyms for running headlines include subheads, subheadings, deck headlines, and crossheads. These terms are all used to describe the same practice of breaking up a long article into smaller, more digestible pieces for readers. By using running headlines, journalists can help readers stay engaged and focused while giving them a better understanding of the story they are reading.