washing vs laundry

washing and laundry both are nouns.

Word	Noun	Adjective	Verb	Adverb
washing	Yes	No	No	No
laundry	Yes	No	No	No

As nouns, washing and laundry are synonyms defined as:

washing and laundry: garments or white goods that can be cleaned by laundering

Other synonyms of washing include wash, washables.

washing (noun)	laundry (noun)
the work of cleansing (usually with soap and water)	workplace where clothes are washed and ironed
garments or white goods that can be cleaned by laundering	garments or white goods that can be cleaned by laundering