flapper vs missy

flapper and missy both are nouns.

Word	Noun	Adjective	Verb	Adverb
flapper	Yes	No	No	No
missy	Yes	No	No	No

As nouns, missy is a hypernym of flapper; that is, missy is a word with a broader meaning than flapper:

flapper: a young woman in the 1920s who flaunted her unconventional conduct and dress
missy: a young female

Other hypernyms of flapper include fille, girl, miss, young lady, young woman.

flapper (noun)	missy (noun)
a young woman in the 1920s who flaunted her unconventional conduct and dress	a young female