"coffee break" or "lunch break"

[Simpson]

Business English Courses, Elementary Level

ESL/EFL Test #42 "Basic Business English", question 10

At work we get a 30 minute lunch ..........

(a) rest
(b) break
(c) vacation
(d) holiday

Business English Courses, Elementary Level

ESL/EFL Test #42 "Basic Business English", answer 10

At work we get a 30 minute lunch break.

Correct answer: (b) break
_________________________

Why can't we use lunch break?
We often hear "coffee break" or "lunch break" but we hear "rest" when we say take a rest (after a tiring activity). Or it is the difference in British English and American English.

please kindly explain.
Thank you.

Simpson

[Alan]

Hi,

But you can use lunch break????