bliny vs flannel cake

bliny and flannel cake both are nouns.

Word	Noun	Adjective	Verb	Adverb
bliny	Yes	No	No	No
flannel cake	Yes	No	No	No

As nouns, flannel cake is a hypernym of bliny; that is, flannel cake is a word with a broader meaning than bliny:

bliny: Russian pancake of buckwheat flour and yeast; usually served with caviar and sour cream
flannel cake: a flat cake of thin batter fried on both sides on a griddle

Other hypernyms of bliny include battercake, flannel-cake, flapcake, flapjack, griddlecake, hot cake, hotcake, pancake.

bliny (noun)	flannel cake (noun)
Russian pancake of buckwheat flour and yeast; usually served with caviar and sour cream	a flat cake of thin batter fried on both sides on a griddle