Difference between "boarding gate" and "check-in counter"

[Sol Argentina]

English Language Tests, Intermediate level

ESL/EFL Test #158 "Airport and flight travel expressions", question 4

Passengers are advised to be at the ......... gate at least thirty minutes before the scheduled departure time of their flight.

(a) boarding
(b) ticket
(c) open
(d) arrival

English Language Tests, Intermediate level

ESL/EFL Test #158 "Airport and flight travel expressions", answer 4

Passengers are advised to be at the boarding gate at least thirty minutes before the scheduled departure time of their flight.

Correct answer: (a) boarding

Your answer was: correct
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what's the difference between "boarding gate" and "check-in counter"?

Thanks!

Sol Argentina

[Mister Micawber]

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The check-in counter is where you check in to the airline, buy or confirm your ticket, get your boarding pass, and check in your luggage. The boarding gate is where you show your boarding pass and get on the plane.
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Native English teacher at Mister Micawber's