This is the 5588th most frequent Swedish word.
gerdau
The term "gerdau" is not a Swedish word. It may refer to a company's name or something unrelated to Swedish.
Here, 'Gerdau' is used as a proper noun referring to the company.
Jag såg en film om företaget Gerdau igår.
I saw a movie about the company Gerdau yesterday.
In this case, 'Gerdau' again serves as a proper noun denoting a specific entity.
Gerdau är känt för sin ståltillverkning.
Gerdau is known for its steel manufacturing.
This sentence uses 'Gerdau' as the subject of discussion, highlighting it by name.