Jules Maigret vs Commissaire Maigret

Jules Maigret and Commissaire Maigret both are nouns.

Word	Noun	Adjective	Verb	Adverb
Jules Maigret	Yes	No	No	No
Commissaire Maigret	Yes	No	No	No

As nouns, Jules Maigret and Commissaire Maigret are synonyms defined as:

Jules Maigret and Commissaire Maigret: a fictional detective in novels by Georges Simenon

Other synonyms of Jules Maigret include Inspector Maigret.

Jules Maigret (noun)	Commissaire Maigret (noun)
a fictional detective in novels by Georges Simenon	a fictional detective in novels by Georges Simenon