soubrette vs young woman

soubrette and young woman both are nouns.

Word	Noun	Adjective	Verb	Adverb
soubrette	Yes	No	No	No
young woman	Yes	No	No	No

As nouns, young woman is a hypernym of soubrette; that is, young woman is a word with a broader meaning than soubrette:

Other hypernyms of soubrette include fille, girl, miss, missy, young lady.

soubrette (noun)	young woman (noun)
a minor female role as a pert flirtatious lady's maid in a comedy	a young female
a pert or flirtatious young girl