Communications Vs Journalism Vs PR Vs Marketing... What's the difference?

communications vs public relations vs marketing vs journalism
Compare and explain the different career opportunities for each.

The careers mentioned here do not comprise an exhaustive list.

Marketing: Using the four Ps to get the product to the customer and then persuading the customer to buy it. Product, price, place, promotion.

Careers:
Sales
Marketing management
Product management
Logistical support
Advertising account executive
Advertising copywriter

Advertising media planner

Communications: The art of effective interpersonal communication, public speaking, etc.

Careers:

Anything involving public speaking or leading group discussions.

Journalism/Mass Communication:
Getting entertainment, news and editorial stories to the masses via publications and broadcasting.

Careers:
Journalist/reporter
News anchor/weather/sports
Radio host/DJ
Sports commentator

News production/writing

Public Relations:
Handling the press needs of a firm or a person: taking questions at a news conference, putting out press releases, counseling the firm or person when there is a scandal, and praising positive results.

Careers:
PR rep (for firms)
Publicity rep (for individuals)

You have multiple posts indicating a broad range of interests. Did you attend college at all after you graduated from high school in 2011? Is there a community college near you in FL? If so, go talk to someone in their admissions office. They can help you decide how to get started.