What context can I use each word in?
Learn when and how to use these words with these examples!
subsurface
Example
The subsurface water table is critical for agriculture in this region. [subsurface: adjective]
Example
The subsurface of the moon contains valuable minerals and resources. [subsurface: noun]
underground
Example
The subway system is an underground transportation network. [underground: adjective]
Example
The rebels operated from an underground bunker to avoid detection. [underground: noun]
Good things to know
Which word is more common?
Underground is more commonly used than subsurface in everyday language. Underground is a versatile word that can be used in various contexts, while subsurface is less common and typically used in scientific or technical contexts.
What’s the difference in the tone of formality between subsurface and underground?
Both subsurface and underground can be used in formal or technical contexts, but subsurface may be considered more formal due to its technical usage in fields such as geology or engineering.