Question

use complain and complaint in sentence

Answer 1

The lady got the manager of the restaurant to complain about her waiter.

The manager filed the complaint later that day.

Answer 2

Hey mate, here is your answer.

Complain- Did you just 'complain' to our class teacher about what was happening in the class today?
Complaint- The girl reported a 'complaint' about the class to the teacher.

Hope this helped.

#Anusha ^_^