egg fu yung vs omelet

egg fu yung and omelet both are nouns.

Word	Noun	Adjective	Verb	Adverb
egg fu yung	Yes	No	No	No
omelet	Yes	No	No	No

As nouns, omelet is a hypernym of egg fu yung; that is, omelet is a word with a broader meaning than egg fu yung:

egg fu yung: omelet containing onions and celery and chopped meat or fish
omelet: beaten eggs or an egg mixture cooked until just set; may be folded around e.g. ham or cheese or jelly

Other hypernyms of egg fu yung include omelette.

egg fu yung (noun)	omelet (noun)
omelet containing onions and celery and chopped meat or fish	beaten eggs or an egg mixture cooked until just set; may be folded around e.g. ham or cheese or jelly