Nuxt build vs Nuxt Generate -What is the difference?

In the nuxt docs for Cloudflare deployment (https://nuxt.com/deploy/cloudflare), it mentions two options of nuxt build or nuxt generate. It says:

"To leverage server-side rendering on the edge, set the build command to: nuxt build vs To statically generate your website, set the build command to: nuxt generate"

What are the pros and cons to each approach here? Is it as simple as SSR vs SPA? Will it matter if for example I choose nuxt build for SSR but have areas in my app that are [ClientOnly] ?

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