napoleon vs French pastry

napoleon and French pastry both are nouns.

Word	Noun	Adjective	Verb	Adverb
napoleon	Yes	No	No	No
French pastry	Yes	No	No	No

As nouns, French pastry is a hypernym of napoleon; that is, French pastry is a word with a broader meaning than napoleon:

napoleon: a rectangular piece of pastry with thin flaky layers and filled with custard cream
French pastry: sweet filled pastry made of especially puff paste

napoleon (noun)	French pastry (noun)
a rectangular piece of pastry with thin flaky layers and filled with custard cream	sweet filled pastry made of especially puff paste