washables vs household linen

washables and household linen both are nouns.

Word	Noun	Adjective	Verb	Adverb
washables	Yes	No	No	No
household linen	Yes	No	No	No

As nouns, household linen is a hypernym of washables; that is, household linen is a word with a broader meaning than washables:

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

Other hypernyms of washables include garment, white goods.

washables (noun)	household linen (noun)
garments or white goods that can be cleaned by laundering	drygoods for household use that are typically made of white cloth