padding vs stuffing

padding and stuffing both are nouns.

Word	Noun	Adjective	Verb	Adverb
padding	Yes	No	No	No
stuffing	Yes	No	No	No

As nouns, stuffing is a hyponym of padding; that is, stuffing is a word with a more specific, narrower meaning than padding:

padding: artifact consisting of soft or resilient material used to fill or give shape or protect or add comfort
stuffing: padding put in mattresses and cushions and upholstered furniture

Other hyponyms of padding include cushion, falsie, pad.

padding (noun)	stuffing (noun)
artifact consisting of soft or resilient material used to fill or give shape or protect or add comfort	padding put in mattresses and cushions and upholstered furniture
	a mixture of seasoned ingredients used to stuff meats and vegetables