What context can I use each word in?
Learn when and how to use these words with these examples!
metro
Example
I take the metro to work every day. [metro: noun]
Example
The metro station is just a few blocks away from here. [metro: adjective]
underground
Example
The underground is the fastest way to get around London. [underground: noun]
Example
The underground tunnels are well-lit and ventilated. [underground: adjective]
Good things to know
Which word is more common?
Metro is more commonly used than underground in North America and some European countries, while underground is more commonly used in the UK and other English-speaking countries.
What’s the difference in the tone of formality between metro and underground?
Both metro and underground can be used in formal and informal contexts, but metro may be perceived as more modern and formal, while underground may be perceived as more traditional and informal.
