Portuguese flag

Língua vs. idioma

The words língua and idioma in Portuguese both mean language in the sense of a system of communication, but they have subtle differences in their usage and nuances.

Língua

A1
Língua refers to a language as a system of communication, but it also literally means tongue, the organ in the mouth, which highlights its metaphorical origin. It is often used in cultural or traditional contexts and broadly encompasses the concept of language.
A língua portuguesa é falada em vários países.
(The Portuguese language is spoken in several countries.)
A língua é uma das maiores expressões culturais de um povo.
(Language is one of the greatest cultural expressions of a people.)
Ele mordeu a língua enquanto comia.
(He bit his tongue while eating.)

Idioma

A2
Idioma specifically refers to a language as a formalized or standardized system of communication. It is often used in technical, academic, or governmental contexts, emphasizing the organized, codified aspect of a language.
O inglês é o idioma mais utilizado em negócios internacionais.
(English is the most used language in international business.)
Aprender outro idioma pode ser um grande desafio.
(Learning another language can be a great challenge.)
O espanhol é um idioma oficial em muitos países da América Latina.
(Spanish is an official language in many Latin American countries.)

Summary

While both língua and idioma mean language in Portuguese, língua often refers to the cultural, human, or metaphorical aspects of language, while idioma emphasizes its formal and systematic characteristics. These nuances help determine which word to use, depending on the context.