Yes
the Japanese word for subway is : fuyukpu
Subway is a noun.
The subway was full of people.
souterrain
No It's not a compound word
No, important is not a compound word.
Upwards is a compound word.
There is no compound word.A compound word is a word like bus-stop.Husban is spelt like this husband
The doctor hurried on to the subway right before the doors closed.
I'm gonna get a £3 sub from Subway with a free drink!
Train station. Subway is under ground and train station is overground.