atoll |
guyot |
As nouns the difference between atoll and guyot
is that
atoll is a type of island consisting of a ribbon reef that nearly or entirely surrounds a lagoon and supports, in most cases, one to many islets on the reef platform. Atolls have a unique geology, so not all islands with a reef and a lagoon are atolls while
guyot is a flat-topped seamount.
volcano |
guyot |
As a noun volcano
is a vent or fissure on the surface of a planet (usually in a mountainous form) with a magma chamber attached to the mantle of a planet or moon, periodically erupting forth lava and volcanic gases onto the surface.
As a proper noun guyot is
, rare today.