This is the 652nd most frequent Turkish word.
cumhuriyeti
"Cumhuriyeti" means "republic" in English.
Here, 'cumhuriyeti' indicates the official form of government of Turkey.
Türkiye Cumhuriyeti 1923 yılında kurulmuştur.
The Republic of Turkey was established in 1923.
In this sentence, 'Cumhuriyet'in' denotes possession, meaning 'of the Republic'.
Bu heykel, Cumhuriyet'in onuncu yılını anmak için dikilmiştir.
This statue was erected to commemorate the tenth year of the Republic.
Here, 'cumhuriyeti' refers generically to a republic as a concept or form of government.