The word "execution" originated in the late 14th century from the Latin executionem (nominative executio), meaning "an accomplishing" or "a performing".  it came to English via the Anglo-French execucioun and Old French execucion.  It is closely related to the verb execute (14th century) and the noun executor (13th century), both sharing the root meaning of carrying out or following through. 

According to the Oxford English Dictionary (OED), the earliest known use of the noun execution in English is from around 1360.  The word appeared in the Middle English period (1150–1500) with meanings related to "a carrying out, a putting into effect; enforcement; performance (of a law, statute, etc.)".  While it meant "carrying out" generally, the specific sense of "act of putting to death" (capital punishment) originated in the mid-14th century, often from phrases like don execution of deth ("carry out a sentence of death").  The related verb execute is recorded slightly later, in 1387. 

Execution is arguably the most critical component in storytelling, often outweighing the originality of the idea itself. While a unique premise can attract initial attention, it is the execution—the voice, pacing, character development, and prose—that determines whether a story is engaging, memorable, or successful.  Good execution can elevate a cliché premise, while poor execution can ruin a brilliant, original idea. 

Why Execution Matters in Writing Stories: 
Transforms Ideas into Reality: Ideas are intangible "seeds," but execution is the soil and care that allows them to grow into a complete, readable, and emotional story. 
Dictates Reader Engagement: A well-executed story grabs a reader's attention and maintains it through polished prose and effective structure. Poor execution often leads to disinterest, even if the premise is interesting. 
Builds Credibility and Immersion: Good execution justifies character actions and plot points, making the world believable rather than "cheap" or immersion-breaking. 
Distinguishes the Writer's Voice: The uniqueness of a story often lies not in the plot itself, but in the specific rhythm, style, and emotional depth the author brings to it. 
Saves Weak Premises: A common adage in writing is that there are no bad ideas, only bad executions. A well-executed story can make a clichéd or mundane concept feel fresh and interesting. |
Separates Amateurs from Professionals: In the industry, "execution-dependent" scripts are common. A solid, well-executed script is often more valued than a brilliant, unrefined idea. 

Core Components of Good Execution: 
Character and Plot Development: Ensuring characters act in-character, and that plots follow a logical, engaging, cause-and-effect structure. 
Technical Proficiency: Strong, clean writing, proper pacing, and effective dialogue. 
Editing and Refinement: The willingness to revise, cut, and polish scenes for the sake of the overall narrative. 

How to Improve Execution:  
Finish What You Start: Consistently completing stories is the fastest way to improve execution. 
Study Craft and Theory: Reading extensively and studying the techniques other authors use to build scenes and tension. 
Seek Feedback: Having work critiqued to identify where the story breaks down.