I need an article in the communication field.
The best place to start would be the database Communications and Mass Media Complete. Your topic is fairly broad, but we can still search for articles that deal generally with definitions and communications (I put the word ‘communication’ in the article title, and searched for 'definition' anywhere in the record). This search, for example, gives over 500 results.
Articles on this list range from the general, like What Is Communication? Unsettling A Priori and A Posteriori Approaches, to more specific, like Trolling in asynchronous computer-mediated communication: From user discussions to academic definitions.
Let me know if you don't find what you need here. I’d be glad to help you further.