Reclamação vs. queixa
While both reclamação and queixa translate to "complaint", they function differently depending on the context. Generally, reclamação implies seeking a solution or asserting a right (like a customer service issue), while queixa tends to be used for legal reports, medical symptoms, or general grumbling.
Reclamação
B1This word is primarily used in consumer contexts or administrative settings. It implies strict dissatisfaction with a service or product and typically demands a specific solution or correction. If you are unhappy with a purchase or a bill, you make a reclamação.
O cliente pediu o livro de reclamações porque foi mal atendido.
(The customer asked for the complaints book because he was poorly served.)
Fizemos uma reclamação oficial à companhia aérea pelo atraso.
(We made an official complaint to the airline regarding the delay.)
O departamento de recursos humanos recebeu uma reclamação sobre o barulho.
(The human resources department received a complaint about the noise.)
Queixa
B2This word has three main uses: filing a report with police/authorities (reporting a crime), describing a physical ailment or symptom (medical), or the act of whining and venting about personal misfortunes without necessarily expecting a formal fix.
Vou à polícia apresentar uma queixa contra o vizinho.
(I am going to the police to file a complaint against the neighbor.)
A queixa principal do paciente é uma dor forte no peito.
(The patient's main complaint is a severe chest pain.)
Ele passa o dia cheio de queixas sobre a vida dele.
(He spends the day full of complaints about his life.)
Summary
In short, use reclamação when interacting with companies or services to fix a problem (consumer rights). Use queixa when dealing with the police (legal charges), doctors (pain), or personal venting (whining).