脚本 and 台本: rewriting, reading and distributing scripts
Compare 脚本 and 台本 through a director's rewrite, cast readings before rehearsal and a revised script's distribution. Separate document handling from a finished performance.
脚本 in a director's rewrite and a cast reading
脚本 (きゃくほん) means screenplay or script. 「監督は小説を映画の脚本に書き直しました。」 means “The director rewrote the novel as a screenplay.” The director rewrote the novel into a screenplay; the cast is not named as carrying out that rewrite.
「稽古の前に俳優全員で脚本を読み合わせた。」 means “Before rehearsal, the entire cast read the script together to coordinate their timing.” The entire cast read together before rehearsal to coordinate their timing. Those participants and their reading differ from the director and the rewriting in the first example.
台本 in reading and distribution
台本 (だいほん) means script. 「俳優たちは稽古の前に台本を読み合わせた。」 means “The actors read the script together before rehearsal.” The actors' shared reading takes place before rehearsal, overlapping with the action described in the 脚本 example.
「せりふを書き直した新しい台本が配られた。」 means “A new script with revised lines was distributed.” The revised script was distributed. 配られた reports what happened to the document, without reporting that the actors memorized every line.
Overlapping names, different actions
Rewriting a novel, reading a script together and distributing a revised script are different ways of handling a document. Identify the person and action while preserving the overlap between the two script names.
The examples include a film screenplay and scripts read before rehearsal. They do not make 脚本 exclusive to film or 台本 exclusive to stage, and reading or receiving a script does not establish a completed performance.
Does せりふを書き直した新しい台本が配られた report a finished performance or distribution of a script?
Show the answer and why
It reports distribution of a new script with revised lines. The document is the object of revision and distribution; the sentence does not report that the performance or memorization of every line was completed.