restrainer vs nazi

restrainer and nazi both are nouns.

Word	Noun	Adjective	Verb	Adverb
restrainer	Yes	No	No	No
nazi	Yes	No	No	No

As nouns, nazi is a hyponym of restrainer; that is, nazi is a word with a more specific, narrower meaning than restrainer:

restrainer: a person who directs and restrains
nazi: derogatory term for a person who is fanatically dedicated to, or seeks to control, some activity, practice, etc.

Other hyponyms of restrainer include overcomer, subduer, surmounter, suppresser, suppressor, withholder.

restrainer (noun)	nazi (noun)
a person who directs and restrains	derogatory term for a person who is fanatically dedicated to, or seeks to control, some activity, practice, etc.
a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film