linen vs napery

linen and napery both are nouns.

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

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

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

linen (noun)	napery (noun)
white goods or clothing made with linen cloth	linens for the dining table
a fabric woven with fibers from the flax plant
a high-quality paper made of linen fibers or with a linen finish