The term 'masthead title' refers to the titles of the people in charge of a publication, which are usually listed at the top of the first page. The two titles associated with this term are EDITOR (6 letters) and Assistant EDITOR (15 letters). An EDITOR is the person responsible for overseeing the content of a publication, while an Assistant EDITOR helps the EDITOR with tasks such as fact-checking, copy-editing, and proofreading.