laundry vs Laundromat

laundry and Laundromat both are nouns.

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

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

laundry: workplace where clothes are washed and ironed
Laundromat: a self-service laundry (service mark Laundromat) where coin-operated washing machines are available to individual customers

Other hyponyms of laundry include launderette, washhouse.

laundry (noun)	Laundromat (noun)
workplace where clothes are washed and ironed	a self-service laundry (service mark Laundromat) where coin-operated washing machines are available to individual customers
garments or white goods that can be cleaned by laundering