linen vs doily

linen and doily both are nouns.

Word	Noun	Adjective	Verb	Adverb
linen	Yes	No	No	No
doily	Yes	No	No	No

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

Other hyponyms of linen include bath linen, bed linen, doyley, doyly, napery, table linen.

linen (noun)	doily (noun)
white goods or clothing made with linen cloth	a small round piece of linen placed under a dish or bowl
a fabric woven with fibers from the flax plant
a high-quality paper made of linen fibers or with a linen finish