"Screenwriting or scriptwriting is the art and craft of writing scripts for mass media such as feature films, television productions or video games. It is often a freelance profession.
Screenwriters are responsible for researching the story, developing the narrative, writing the script, screenplay, dialogues and delivering it, in the required format, to development executives. Screenwriters therefore have great influence over the creative direction and emotional impact of the screenplay and, arguably, of the finished film. Screenwriters either pitch original ideas to producers, in the hope that they will be optioned or sold; or are commissioned by a producer to create a screenplay from a concept, true story, existing screen work or literary work, such as a novel, poem, play, comic book, or short story. Types
The act of screenwriting takes many forms across the entertainment industry. Often, multiple writers work on the same script at different stages of development with different tasks. Over the course of a successful career, a screenwriter might be hired to write in a wide variety of roles.
Some of the most common forms of screenwriting jobs include:
Spec script writing
Spec scripts are feature film or television show scripts written on speculation of sale, without the commission of a film studio, production company or TV network. The content is usually invented solely by the screenwriter, though spec screenplays can also be based on established works or real people and events. The spec script is a Hollywood sales tool. The vast majority of scripts written each year are spec scripts, but only a small percentage make it to the screen.A spec script is usually a wholly original work, but can also be an adaptation.
In television writing, a spec script is a sample teleplay written to demonstrate the writer's knowledge of a show and ability to imitate its style and conventions. It is submitted to the show's producers in hopes of being hired to write future episodes of the show. Budding screenwriters attempting to break into the business generally begin by writing one or more spec scripts Although writing spec scripts is part of any writer's career, the Writers Guild of America forbids members to write "on speculation". The distinction is that a "spec script" is written as a sample by the writer on his or her own; what is forbidden is writing a script for a specific producer without a contract. In addition to writing a script on speculation, it is generally not advised to write camera angles or other directional terminology, as these are likely to be ignored. A director may write up a shooting script himself or herself, a script that guides the team in what to do in order to carry out the director's vision of how the script should look. The director may ask the original writer to co-write it with him or her, or to rewrite a script that satisfies both the director and producer of the film/TV show. Spec writing is also unique in that the writer must pitch the idea to producers. In order to sell the script, it must have an excellent title, good writing, and a great logline. A logline is one sentence that lays out what the movie is about. A well written logline will convey the tone of the film, introduce the main character, and touch on the primary conflict. Usually the logline and title work in tandem to draw people in, and it is highly suggested to incorporate irony into them when possible. These things, along with nice, clean writing will hugely impact whether or not a producer picks up the spec script.
Commissioned screenplay
A commissioned screenplay is written by a hired writer. The concept is usually developed long before the screenwriter is brought on, and often has multiple writers work on it before the script is given a green light. The plot development is usually based on highly successful novels, plays, TV shows and even video games, and the rights to which have been legally acquired.
Feature assignment writing
Scripts written on assignment are screenplays created under contract with a studio, production company, or producer. These are the most common assignments sought after in screenwriting. A screenwriter can get an assignment either exclusively or from "open" assignments. A screenwriter can also be approached and offered an assignment. Assignment scripts are generally adaptations of an existing idea or property owned by the hiring company, but can also be original works based on a concept created by the writer or producer."
Credits to: Wikipedia/ https://en.wikipedia.org/wiki/Screenwriting
Hopefully you find this helpful, if not the I sincerely apologize for wasting time and putting an answer. Have a great day, stay safe and good luck on all your projects/tests/assignments!