coup d'etat vs putsch

coup d'etat and putsch both are nouns.

Word	Noun	Adjective	Verb	Adverb
coup d'etat	Yes	No	No	No
putsch	Yes	No	No	No

As nouns, coup d'etat and putsch are synonyms defined as:

coup d'etat and putsch: a sudden and decisive change of government illegally or by force

Other synonyms of coup d'etat include coup, takeover.

coup d'etat (noun)	putsch (noun)
a sudden and decisive change of government illegally or by force	a sudden and decisive change of government illegally or by force