Strassburg vs Strasbourg

Strassburg and Strasbourg both are nouns.

Word	Noun	Adjective	Verb	Adverb
Strassburg	Yes	No	No	No
Strasbourg	Yes	No	No	No

As nouns, Strassburg and Strasbourg are synonyms defined as:

Strassburg and Strasbourg: city on the Rhine in eastern France near the German border; an inland port

Strassburg (noun)	Strasbourg (noun)
city on the Rhine in eastern France near the German border; an inland port	city on the Rhine in eastern France near the German border; an inland port