washing vs white goods

washing and white goods both are nouns.

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

As nouns, white goods is a hypernym of washing; that is, white goods is a word with a broader meaning than washing:

washing: garments or white goods that can be cleaned by laundering
white goods: drygoods for household use that are typically made of white cloth

Other hypernyms of washing include garment, household linen.

washing (noun)	white goods (noun)
the work of cleansing (usually with soap and water)	drygoods for household use that are typically made of white cloth
garments or white goods that can be cleaned by laundering	large electrical home appliances (refrigerators or washing machines etc.) that are typically finished in white enamel