Round Table vs King Arthur's Round Table

Round Table and King Arthur's Round Table both are nouns.

Word	Noun	Adjective	Verb	Adverb
Round Table	Yes	No	No	No
King Arthur's Round Table	Yes	No	No	No

As nouns, Round Table and King Arthur's Round Table are synonyms defined as:

Round Table and King Arthur's Round Table: (legend) the circular table for King Arthur and his knights

Round Table (noun)	King Arthur's Round Table (noun)
(legend) the circular table for King Arthur and his knights	(legend) the circular table for King Arthur and his knights