script vs promptbook

script and promptbook both are nouns.

Word	Noun	Adjective	Verb	Adverb
script	Yes	No	Yes	No
promptbook	Yes	No	No	No

As nouns, promptbook is a hyponym of script; that is, promptbook is a word with a more specific, narrower meaning than script:

script: a written version of a play or other dramatic composition; used in preparing for a performance
promptbook: the copy of the playscript used by the prompter

script (noun)	promptbook (noun)
a written version of a play or other dramatic composition; used in preparing for a performance	the copy of the playscript used by the prompter
a particular orthography or writing system
something written by hand

script (verb)	promptbook (verb)
write a script for