Update to my initial reply:
Alright, after a little refreshing of my memory, there are just too many awesome tools in Scrivener to detail. Custom metadata, linguistic focus, snapshots, revision mode, placeholders being just a few.
What I’ve rendered it down to is that comparing Scrivener 3 to Word or Google Docs is like comparing a screwdriver to a toolbox full of tools. If we are just comparing screwdrivers, then Word is probably just as good. The question to really ask is what other tools are you using to create your novels besides just drafting them and how much do they cost when added together?
Writing a novel involves planning, organizing research and metadata, writing, editing and revising, formatting for various print and electronic output formats for upload to various services and maybe a few other things. Scrivener has tools for almost all of this.
You could use Word plus other tools to accomplish many of the same things that Scrivener integrates into one application. ProWritingAid seems to be adding a lot of linguistic focus tools to analyze your writing as you revise to their service which might be better than Scrivener’s linguistic focus options. Vellum and calibre are other options for formatting your output. I talked about yWriter in another topic where you can enter a lot of helpful metadata for your scenes to better manage details in them. Scrivener has tools that could replace Evernote and some of the other outlining and research management tools you might use.
I’m not aware of any tools that have the split screen abilities of Scrivener or revision mode. Revision mode color codes your text so that you can see which draft you added particular sections. Along with the comment tool and Snapshots which saves a state of your manuscript before you make changes, allowing you to revert back any time, you can more easily trace back when you made certain changes in direction and continue them or go back. Someone else mentioned the corkboard for planning and outlining.
There’s a lot more.
My favorite really is the custom metadata. I believe in yWriter, the metadata is fixed but with custom metadata you can define your own categories of data to track in your documents. For example, tagging every scene with its location would allow you to quickly filter and search for every scene you might need to update if you later realized you had to change information regarding that location’s details for some reason.
Word is a word processing application. Scrivener is a box of writing tools.