First World War vs battle of the Aisne

First World War and battle of the Aisne both are nouns.

Word	Noun	Adjective	Verb	Adverb
First World War	Yes	No	No	No
battle of the Aisne	Yes	No	No	No

First World War (noun)	battle of the Aisne (noun)
a war between the allies (Russia, France, British Empire, Italy, United States, Japan, Rumania, Serbia, Belgium, Greece, Portugal, Montenegro) and the Central Powers (Germany, Austria-Hungary, Turkey, Bulgaria) from 1914 to 1918	a battle in World War I (May 1918); the Germans tried to attack before the American numbers were too great to defeat; the tactical success of the Germans proved to be a strategic failure