egg white vs ingredient

egg white and ingredient both are nouns.

Word	Noun	Adjective	Verb	Adverb
egg white	Yes	No	No	No
ingredient	Yes	No	No	No

As nouns, ingredient is a hypernym of egg white; that is, ingredient is a word with a broader meaning than egg white:

egg white: the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water
ingredient: food that is a component of a mixture in cooking

Other hypernyms of egg white include fixings.

egg white (noun)	ingredient (noun)
the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water	a component of a mixture or compound
	an abstract part of something
	food that is a component of a mixture in cooking