fissure >> ˈfɪʃə
Definition: [noun] a long, narrow opening or line of breakage made by cracking or splitting, especially in rock or earth.
Example: the bacteria survive around vents or fissures in the deep ocean floor
Definition: [noun] a state of incompatibility or disagreement.
Example: a fissure between philosophy and reality
Definition: [verb] split or crack (something) to form a long, narrow opening.
Example: the dry years had cracked and fissured the cliffs