fixings vs ingredient

fixings and ingredient both are nouns.

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

As nouns, fixings and ingredient are synonyms defined as:

fixings and ingredient: food that is a component of a mixture in cooking

fixings (noun)	ingredient (noun)
the accessories that normally accompany (something or some activity)	a component of a mixture or compound
food that is a component of a mixture in cooking	an abstract part of something
	food that is a component of a mixture in cooking