internment camp vs POW camp

internment camp and POW camp both are nouns.

Word	Noun	Adjective	Verb	Adverb
internment camp	Yes	No	No	No
POW camp	Yes	No	No	No

As nouns, internment camp and POW camp are synonyms defined as:

Other synonyms of internment camp include prison camp, prisoner of war camp.

internment camp (noun)	POW camp (noun)
a camp for prisoners of war	a camp for prisoners of war