libretto vs playscript

libretto and playscript both are nouns.

Word	Noun	Adjective	Verb	Adverb
libretto	Yes	No	No	No
playscript	Yes	No	No	No

As nouns, playscript is a hypernym of libretto; that is, playscript is a word with a broader meaning than libretto:

libretto: the words of an opera or musical play
playscript: a written version of a play or other dramatic composition; used in preparing for a performance

Other hypernyms of libretto include book, script.

libretto (noun)	playscript (noun)
the words of an opera or musical play	a written version of a play or other dramatic composition; used in preparing for a performance