Capacete vs. elmo
The Portuguese words capacete and elmo both refer to types of protective headgear, but they have distinct uses and historical contexts.
Capacete
A2Capacete is the modern, general term for helmet used in various contexts, including sports, construction, and motorcycle riding.
O ciclista sempre usa seu capacete por segurança.
(The cyclist always wears his helmet for safety.)
Os trabalhadores da construção civil devem usar capacetes.
(Construction workers must wear helmets.)
O capacete do bombeiro o protege de objetos caindo.
(The firefighter's helmet protects him from falling objects.)
Elmo
B2Elmo specifically refers to a historical helmet, typically associated with medieval knights or ancient warriors.
O cavaleiro medieval usava um elmo de aço.
(The medieval knight wore a steel helmet.)
O elmo do gladiador romano era decorado com penas.
(The Roman gladiator's helmet was decorated with feathers.)
No museu, vimos um elmo usado na Idade Média.
(In the museum, we saw a helmet used in the Middle Ages.)
Summary
While capacete is used for modern helmets in everyday contexts, elmo is reserved for historical or ancient helmets. Capacete is more commonly used in contemporary Portuguese, whereas elmo is often found in historical or literary contexts.