“solve”, why not solution? Like “spend” and not expenditure, why use the verb as a noun and not care about grammar?
These examples that you're calling "verbs as a noun" are standard grammar. You can't just invent simplified rules about a language and declare it wrong when the rules fall apart.
They’re shorter.
Why so pedantic?
These examples that you're calling "verbs as a noun" are standard grammar. You can't just invent simplified rules about a language and declare it wrong when the rules fall apart.