This doesn't make any sense. Why would you want the meaning of "some degree of knowledge" and "full functional literacy" to be close? What's misleading about describing exactly what you're talking about? Who cares how many people are literate in Arabic in this context? What you care about is how many people know enough about Arabic to know that you don't know anything about Arabic.

You seem to be demanding that "people who know enough medical terminology and/or Latin to see through your fictional doctor" be nearly the same class as "people who are doctors," and what's more, implying that's some sort of deception.

> No need to be rude.