Usually creates agent nouns that are often jobs, and adjectives of origin.

NounNoun with connective iAdjective of origin
artisan
bohemian
comedian
custodian
dystopian
epicurean
historian
lesbian
librarian
partisan
publican
puritan
seminarian
simian
theologian
unitarian
utopian
veteran
veterinarian
civilian
clinician
diagnostician
electrician
equestrian
geriatrician
guardian
logician
magician
mathematician
musician
obstetrician
paediatrician (US pediatrician)
patrician
pedestrian
plebeian
physician
politician
reptilian
semiotician
statistician
tactician
technician
vulgarian
Albanian
Armenian
Bosnian
Bulgarian
Canadian
Croatian
Egyptian
Estonian
Georgian
Hungarian
Italian
Korean
Latvian
Lilliputian
Lithuanian
Macedonian
Martian
Norwegian
Persian
Romanian
Russian
Serbian
Ukrainian
Venetian