crackling vs residue

crackling and residue both are nouns.

Word	Noun	Adjective	Verb	Adverb
crackling	Yes	No	No	No
residue	Yes	No	No	No

As nouns, residue is a hypernym of crackling; that is, residue is a word with a broader meaning than crackling:

crackling (noun)	residue (noun)
the sharp sound of snapping noises	something left after other parts have been taken away
the residue that remains after animal fat has been rendered	matter that remains after something has been removed