This is the 3807th most frequent Swedish word.
järnväg
Railway.
In this sentence, 'järnvägar' (railways) is mentioned in a plural form to discuss historical aspects of railway systems.
Gamla järnvägar är ofta historiskt intressanta.
Old railways are often historically interesting.
The word 'järnväg' (railway) is used to refer to railway infrastructure near a specific location.
Jag bor nära en stor järnväg.
I live close to a large railway.
Here, 'järnväg' (railway) is utilized to describe a means of transport connecting urban areas.