The description of script reads
Questions about (learning) scripts or writing systems, i.e. the visual representation of verbal communication. This includes alphabets, abjads, abugidas, logographic systems, etc.
The description of writing-system reads
A writing system is a set of symbols used to represent a language in writing. A writing system can be representative of various sounds (cenemic), of various meanings (pleremic), or both.
script currently has three questions; writing-system has 15 questions. In spite of the different definitions, I think they can be merged, or script can be made a synonym of writing-system. Since "script" can also have other meanings, such as manuscript or screenplay, I'd rather make "script" a synonym for "writing system" than the other way around.
What do others think?