table napkin vs table linen

table napkin and table linen both are nouns.

Word	Noun	Adjective	Verb	Adverb
table napkin	Yes	No	No	No
table linen	Yes	No	No	No

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

table napkin: a small piece of table linen that is used to wipe the mouth and to cover the lap in order to protect clothing
table linen: linens for the dining table

Other hypernyms of table napkin include napery.

table napkin (noun)	table linen (noun)
a small piece of table linen that is used to wipe the mouth and to cover the lap in order to protect clothing	linens for the dining table