Artsakh vs Nagorno-Karabakh Republic

Artsakh and Nagorno-Karabakh Republic both are nouns.

Word	Noun	Adjective	Verb	Adverb
Artsakh	Yes	No	No	No
Nagorno-Karabakh Republic	Yes	No	No	No

As nouns, Artsakh and Nagorno-Karabakh Republic are synonyms defined as:

Artsakh and Nagorno-Karabakh Republic: unrecognized de-facto state in South Caucasus

Other synonyms of Artsakh include Nagorno-Karabakh, Republic of Artsakh.

Artsakh (noun)	Nagorno-Karabakh Republic (noun)
unrecognized de-facto state in South Caucasus	unrecognized de-facto state in South Caucasus