white goods vs ironing

white goods and ironing both are nouns.

Word	Noun	Adjective	Verb	Adverb
white goods	Yes	No	No	No
ironing	Yes	No	No	No

As nouns, ironing is a hyponym of white goods; that is, ironing is a word with a more specific, narrower meaning than white goods:

white goods: drygoods for household use that are typically made of white cloth
ironing: garments (clothes or linens) that are to be (or have been) ironed

Other hyponyms of white goods include laundry, wash, washables, washing, linen.

white goods (noun)	ironing (noun)
drygoods for household use that are typically made of white cloth	the work of using heat to smooth washed clothes in order to remove any wrinkles
large electrical home appliances (refrigerators or washing machines etc.) that are typically finished in white enamel	garments (clothes or linens) that are to be (or have been) ironed