This is the 30th most frequent Turkish word.
kişi
Person.
Here, "kişi" is used as a noun referring to an individual person.
Bu odada beş kişi var.
There are five people in this room.
In this sentence, "kişi" denotes a specific individual and is accompanied by the demonstrative pronoun "o".
O kişi, benim arkadaşım.
That person is my friend.
"Kişi" is employed here to refer to multiple individuals, emphasizing the scale of participation in the survey.