[plt-scheme] Some fine distinctions

> Individually I think I know what they are but I would have a tough
> time if asked to distinguish.
>
> Currying vs Partial evaluation.

let me try my hands on this one:

currying is just about the possibility to pass arguments to a function  
in separate steps. Ie. passing a parameter returns a function that  
waits for the other parameters.

partial evaluation further implies that when you have a parameter that  
becomes known, you evaluate what you can of the resulting function.

-- Éric