Although not intuitive, it's common to call that the 'runtime' in the JS world, while V8 and JSC would be called 'JS engines'. Deno used similar wording in a t

Although not intuitive, it's common to call that the 'runtime' in the JS world, while V8 and JSC would be called 'JS engines'. Deno used similar wording in a tutorial for creating your own JS runtime using Rust and V8 bindings: https://deno.com/blog/roll-your-own-javascript-runtime https://deno.com/blog/roll-your-own-javascript-runtime IMO the tutorial is still cool nonetheless, it's a fun subject.