This is the 9214th most frequent Polish word.
tbilisi
"Tbilisi" is not a Polish word; it is the name of the capital city of Georgia.
Here, 'Tbilisi' is used as a proper noun representing a place name, serving as the subject of the sentence.
Tbilisi jest stolicą Gruzji.
Tbilisi is the capital of Georgia.
In this sentence, 'Tbilisi' is used as the destination in a phrase after the verb 'visit'.
Planuję odwiedzić Tbilisi w przyszłym roku.
I plan to visit Tbilisi next year.
Here, 'Tbilisi' appears within a prepositional phrase, indicating a location of action.