Morir vs. fallecer

The Spanish language has multiple words for the English verb 'to die', including 'morir' and 'fallecer'. Although they carry the same semantic field, their usage differs based on context and formalness.

Morir

'Morir' translates directly as 'to die'. It is a regular verb in Spanish and is generally used in informal or everyday conversations.
El gato va a morir de hambre sin su dueño.
(The cat is going to die of hunger without its owner.)
No quiero morir joven.
(I don't want to die young.)
Si me miente otra vez, creo que voy a morir de desilusión.
(If he lies to me one more time, I think I'm going to die of disappointment.)

Fallecer

'Fallecer' also means 'to die', but it carries a more formal or euphemistic connotation. It is often used in news reports or official documents, when referring to someone's passing.
Su abuela falleció en el hospital esta mañana.
(Her grandmother passed away in the hospital this morning.)
El escritor falleció a los 70 años.
(The author died at the age of 70.)
Muchas personas fieles fallecieron durante la epidemia.
(Many faithful people died during the epidemic.)

Summary

In summary, while both 'morir' and 'fallecer' translate as 'to die' in English, 'morir' is typically used in informal or everyday contexts, while 'fallecer' has a more formal or euphemistic tone. Additionally, 'fallecer' tends to be used more frequently in news reports and official documents.