Stars and Stripes vs Old Glory

Stars and Stripes and Old Glory both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stars and Stripes	Yes	No	No	No
Old Glory	Yes	No	No	No

As nouns, Stars and Stripes and Old Glory are synonyms defined as:

Stars and Stripes and Old Glory: the national flag of the United States of America

Other synonyms of Stars and Stripes include American flag, Star-Spangled Banner.

Stars and Stripes (noun)	Old Glory (noun)
the national flag of the United States of America	the national flag of the United States of America