Comment by eudamoniac

Verbal fluency is a completely different ballgame to literary fluency. Literature uses vastly more words. Stride is a pretty common one.

Open a collegiate dictionary to a series of random pages, checking the first word to see if you can give any vague definition of it. A fluent speaker who doesn't read literature will likely be able to for fewer than 1/4th of them. A decent literary vocabulary would know ~2/3 or more imo.