There are four broad categories of fake news, according to media professor Melissa Zimdars of Merrimack College.
CATEGORY 1: Fake, false, or regularly misleading websites that are shared on Facebook and social media. Some of these websites may rely on “outrage” by using distorted headlines and decontextualized or dubious information in order to generate likes, shares, and profits.
CATEGORY 2: Websites that may circulate misleading and/or potentially unreliable information
CATEGORY 3: Websites which sometimes use clickbait-y headlines and social media descriptions
CATEGORY 4: Satire/comedy sites, which can offer important critical commentary on politics and society, but have the potential to be shared as actual/literal news
No single topic falls under a single category - for example, false or misleading medical news may be entirely fabricated (Category 1), may intentionally misinterpret facts or misrepresent data (Category 2), may be accurate or partially accurate but use an alarmist title to get your attention (Category 3) or may be a critique on modern medical practice (Category 4.) Some articles fall under more than one category. Assessing the quality of the content is crucial to understanding whether what you are viewing is true or not. It is up to you to do the legwork to make sure your information is good.
"In Episode 16 of the Dewey Decibel podcast, American Libraries looks at the “fake news” phenomenon—its history, how we become susceptible to it, and how we can fight it."
Take the Pew Research Center Quiz
How well can you tell factual from opinion statements?
"Fake news is not news you disagree with -- it is content generated by non-news organizations to drive eyeballs to ads (e.g., clickbait) or to spread false information (rumors, conspiracy theories, junk science, and propaganda, for example)." From a Cornell University Library site