bliny vs flapjack

bliny and flapjack both are nouns.

Word	Noun	Adjective	Verb	Adverb
bliny	Yes	No	No	No
flapjack	Yes	No	No	No

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

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

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

bliny (noun)	flapjack (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