This is the 14546th most frequent Russian word.
пассажир
Passenger.
The word 'пассажир' refers to an individual who is using transportation such as a bus.
Пассажир сел в автобус на остановке.
The passenger boarded the bus at the stop.
Here, 'пассажиры' (plural of 'пассажир') signifies people traveling by airplane.
В самолёте пассажиры должны следовать правилам безопасности.
Passengers on an airplane must follow safety rules.
'Пассажиров' (genitive plural form of 'пассажир') denotes individuals traveling by train.