This is the 8323rd most frequent Polish word.
pavel
The Polish word "Pavel" is not a Polish word but rather a given name; its equivalent in Polish is "Paweł," meaning "Paul" in English.
In this sentence, 'Pavel' is used as a proper noun referring to a specific person.
Pavel jest bardzo miłym człowiekiem.
Pavel is a very nice person.
Here, 'Pavel' is again used as a proper noun which is the name of the individual being talked about, utilized in a possessive/genitive form in Polish.
Wczoraj widziałem Pavla w parku.
Yesterday, I saw Pavel in the park.
In this context, 'Pavel' is used as the object of the discussion in a locative case form as per Polish grammar rules.