rib roast vs standing rib roast

rib roast and standing rib roast both are nouns.

Word	Noun	Adjective	Verb	Adverb
rib roast	Yes	No	No	No
standing rib roast	Yes	No	No	No

As nouns, rib roast and standing rib roast are synonyms defined as:

rib roast and standing rib roast: a cut of meat (beef or venison) including more than one rib and the meat located along the outside of the ribs

rib roast (noun)	standing rib roast (noun)
a cut of meat (beef or venison) including more than one rib and the meat located along the outside of the ribs	a cut of meat (beef or venison) including more than one rib and the meat located along the outside of the ribs