zeppelin vs Graf Zeppelin

zeppelin and Graf Zeppelin both are nouns.

Word	Noun	Adjective	Verb	Adverb
zeppelin	Yes	No	No	No
Graf Zeppelin	Yes	No	No	No

As nouns, zeppelin and Graf Zeppelin are synonyms defined as:

zeppelin and Graf Zeppelin: a large rigid dirigible designed to carry passengers or bombs

zeppelin (noun)	Graf Zeppelin (noun)
a large rigid dirigible designed to carry passengers or bombs	a large rigid dirigible designed to carry passengers or bombs