How to use nuxtjs directly in a file?

Question

Vue.js

In the case of Vue, it can be included directly in the required file in the script tag

var app = new Vue({
    el     : '#somediv,
})

Is it possible to similarly connect Nuxt alongside Vue to use server rendering?

Answer 1

Is it possible to similarly connect Nuxt alongside Vue to use server rendering?

No. Nuxt is a very different technology that you don't understand very well. Nuxt does not embed anywhere, it does not need to be connected anywhere. Nuxt is both the backend (not to be confused with the API) and the frontend of your application.
You are either using Nuxt or another SSR