This is the 7174th most frequent Polish word.
jacinda
The word "jacinda" is not a Polish term; it may be a proper name or a foreign word.
Here, 'Jacinda' is a proper noun, specifically a given name, used to refer to a person in the context of stating her actions.
Jacinda zaczęła nową pracę w szkole.
Jacinda started a new job at a school.
In this example, 'Jacinda' is used as a proper noun in the accusative case to indicate the entity observed in the described scenario.
Widziałem Jacindę na poranku prasowym.
I saw Jacinda at the press briefing in the morning.
Finally, 'Jacinda' remains as a proper noun in the nominative case, functioning as the subject in an interrogative sentence.