Depth
Depth noun - Distance measured from the top to the bottom of something.
Surface
Surface noun - An outer part or layer.
How words are described
Both words in one sentence
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Secondary Fire: You sub's secondary fire was to both drop depth charges, AND use anti-surface/anti-air (depending on whether it was at the surface) attacks.
Source: Video Game / In the Hunt - As she puts it, title character Mike Liberty is "all surface," and Mengsk is "all depth." When she really works at reading him late in the book, she is horrified at what she finds.
Source: Anti-True Sight - These were originally submarine-launched weapons, but now are also used on surface ships by being launched into the water out of a ship's torpedo tubes, then popping back up to the surface and launching into the air, then flying to the target submarine and dropping a torpedo or nuclear depth bomb.
Source: Useful Notes / Naval Weapons
Cite this Source
Surface and Depth. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/depth/surface
Depth & Surface. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/depth/surface>.
Surface or Depth. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/depth/surface.
Google Ngram Viewer shows how "depth" and "surface" have occurred on timeline