This is the 7374th most frequent Spanish word.
helmut
The word "helmut" is not Spanish; it is a proper name of German origin.
The word 'Helmut' is here used as a proper noun indicating a person's name.
Helmut es el nombre de mi amigo alemán.
Helmut is the name of my German friend.
Although 'Helmut' is similar to 'Helm' (meaning 'helmet' in German), it is not used in Spanish for this purpose; instead, 'casco' is the correct term.
El casco que utilizas al manejar bicicleta, en alemán se llama 'Helm'.
The helmet you use when riding a bicycle is called 'Helm' in German.
This sentence clarifies that 'Helmut' is not a commonly used Spanish word but a name.