This is the 8701st most frequent Spanish word.
sidenor
"Sidenor" is not a standard Spanish word; it is a proper noun, specifically the name of a steel manufacturing company in Spain.
In this sentence, 'Sidenor' is used as the name of a company, referenced as a workplace.
Trabajé en Sidenor durante cinco años.
I worked at Sidenor for five years.
Here, 'Sidenor' is again a proper noun, specifying a company's activity in steel manufacturing.
Sidenor produce aceros especiales para diversas industrias.
Sidenor produces special steels for various industries.
In this sentence, 'Sidenor' refers to the company implementing the project, highlighting its role in economic development.