blini vs flannel cake

blini and flannel cake both are nouns.

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

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

blini: 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 blini include battercake, flannel-cake, flapcake, flapjack, griddlecake, hot cake, hotcake, pancake.

blini (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