yolk vs ingredient

yolk and ingredient both are nouns.

Word	Noun	Adjective	Verb	Adverb
yolk	Yes	No	No	No
ingredient	Yes	No	No	No

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

Other hypernyms of yolk include fixings.

yolk (noun)	ingredient (noun)
nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg)	a component of a mixture or compound
the yellow spherical part of an egg that is surrounded by the albumen	an abstract part of something
	food that is a component of a mixture in cooking