### shape | gap:

Hole
* Any holes gnawed through the bark make the trees susceptible to fungus and bacteria.
* Most holes hold water.
* Some holes are functional, elongated passageways, rather than punctuated voids in solids.
* Some holes have gravity
  - strong gravity
  - such strong gravity
* allow oxygen to enter and lead to problems with silage quality due to aerobic deterioration
  - the shoe to remain as light as air
* appear in all the organs
  - bones replacing normal bone with scar tissue and extra blood vessels
  - flowers and then in leaves
  - vessel walls and blood leaks out into the tissues
* are absence
  - books
  - defects
  - essential for leather and vinyl shoes, to prevent water from standing
  - important as shelter for many of the large and small animals of Australia
* are located in buttons
  - dirt
  - donuts
  - doughnuts
  - golf courses
  - green
  - ground
  - locks
  - notebook paper
  - old socks
  - pockets
  - swiss cheese
  - negative space
  - openings
  - part of golf courses
* are used for black
  - entries
  - hide
  - planting
  - screws
  - vacant states in the valence band that are created when an electron is removed
* can become quite large and flimsy retinal vessels bridge holes.
* come in a variety of geometries and sizes.
* develop in the membrane separating the nostrils.
* have the opposite properties of the medium's components.
* is an opening
* provide shelter for many kinds of animals, from swarms of insects to hibernating mammals.

### shape | gap | hole:

Coronal hole
* appear as large dark regions over the brighter image of the solar corona in X-rays.
* are a source of high-speed solar wind
  - another type of structure on the solar surface
  - dark regions that reside on both poles of the sun
  - easy to spot by looking at the Sun through an x-ray telescope
* are regions in the solar corona of exceptionally low density and temperature
  - of reduced emission, reduced density, and increased speed
  - where the corona is dark
* are the main source of recurrent solar activity
  - sources of high-speed solar wind streams
  - visible in several wavelengths but most notably in solar x-rays
* can last for months or years.
* come in all shapes and sizes, and locations.
* have a weaker magnetic field strength and a lower temperature.

Eyelet
* are holes.
* are part of boots
  - curtains
  - garments

Gopher hole
* are sometimes present with no dirt distributed above ground.
* can seriously injure large ruminants.

Large hole
* are where algae live.
* can continue to allow small amounts of blood from the veins to bypass the lungs.
* develop from earlier feeding as the leaf tissue expands.

### shape | gap | hole:

Leak
* Most leaks occur at joints, at structural connections, or at shrinkage cracks in concrete.
* also create underground ponds, where bacteria flourish around the pipes.
* are damage
  - disclosures
  - leaks in the pads or the keys
  - located in boats
  - micturition
  - soft rots
  - the number one cause of water waste
* can occurs at joints, resulting in leakage of transformer oil to the soil environment
  - spread very rapidly in electronic communication
* can waste a lot of water
  - hundreds of gallons of water a day
* cause breaks.
* occur when seals inside the faucet become dirty or worn
  - the toilet is out of adjustment or when parts are worn
* tend to grow over time and they tend to operate differently under different conditions.

### shape | gap | hole | leak:

Gas leak
* are one of the most dangerous aftermaths of earthquakes.
* can be a danger to people or property
  - cause explosions
  - produce catastrophic explosions particularly in urban and residential areas
* create bubbles.

Memory leak
* are rare in Python.
* is when the program continues to use ram memory even after the program is closed.