Definitions

Real:

"Unfeigned or sincere. Existing or occurring as fact; actual rather than imaginary, ideal, or fictitious." (Dictionary.com) 

Ethical, natural, honest, simple, unspun, sustainable, beautiful, rooted, three-dimensional, human.

Authentic: 

"Having an origin supported by unquestionable evidence; authenticated; verified. Entitled to acceptance or belief because of agreement with known facts or experience; reliable; trustworthy." (Dictionary.com) 

Facts, truth, genuineness, honesty, transparency, directness, sincerity, causes and effects, mindfulness.

Alternative facts:

"Alternative facts" is a phrase used by U.S. Counselor to the President Kellyanne Conway during a Meet the Press interview on January 22, 2017, in which she defended White House Press Secretary Sean Spicer's false statement about the attendance at Donald Trump's inauguration as President of the United States. When pressed during the interview with Chuck Todd to explain why Spicer "utter[ed] a provable falsehood", Conway stated that Spicer was giving "alternative facts". Todd responded, "Look, alternative facts are not facts. They're falsehoods." 

Conway's use of the phrase "alternative facts" to describe demonstrable falsehoods was widely mocked on social media and sharply criticized by journalists and media organizations. Conway later defended her choice of words, defining "alternative facts" as "additional facts and alternative information."" (Wikipedia.org) 

 Misinformation, a provable falsehood. Lies being told as if they were the truth, even if people know that they are lies. Unashamed, blatant misdirection. Alternative information to direct attention away from the truth.

Fake News:

"Fake news is a type of... journalism that consists of deliberate misinformation or hoaxes spread via the traditional print or broadcasting news media or via Internet-based social media. A report is fake news if it was written and published with the intent to mislead in order to gain financially or politically. As such, intentionally misleading and deceptive fake news is different from obviously satirical or parody articles or papers such as The Onion. Fake news often employs eye-catching headlines or entirely fabricated news stories in order to increase readership and, in the case of internet-based stories, online sharing and Internet click revenue."

 It all stems around the idea of disinformation and misinformation, mainly at the profit of one and downfall of another. Alternative facts and fake news are basically the same thing, fiction presented as fact in order for one side to take advantage of another.