soubrette vs young lady

soubrette and young lady both are nouns.

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

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

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

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