This is the 488th most frequent Portuguese word.
guerra
War.
Here, 'guerra' is used in its general meaning to describe conflict between nations or groups.
A guerra é sempre uma tragédia para a humanidade.
War is always a tragedy for humanity.
'Guerra' metaphorically refers to a personal or internal struggle.
Ele luta sua própria guerra contra os vícios que enfrenta.
He fights his own war against the vices he faces.
In this context, 'guerra' specifically refers to an organized military conflict.