Japanese Red Army vs Nihon

Japanese Red Army and Nihon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japanese Red Army	Yes	No	No	No
Nihon	Yes	No	No	No

Japanese Red Army (noun)	Nihon (noun)
a terrorist group organized in 1970 to overthrow the Japanese government and monarchy and to foment world revolution; is said to have close ties with Palestinian terrorists	a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building