Annulus
It is called leading.
Oh, dude, that's easy! The space inside a circle is called the "interior" or the "area." It's like the VIP section for all the points that are chilling inside the circle. So, yeah, it's where all the action happens... if circles could have parties, that is.
parallel
In 2-dimensional space, it is the difference between their y-coordinates, in 3-dimensional space, it is the difference between their z-coordinates.
the Crossing
The space between your toes is called the interdigital space.
The space between neurons is called the synapse.
The space between your eyebrows is called the "Glabella."
The capacitance between two concentric spheres is determined by the radius of the spheres and the permittivity of the material between them. It can be calculated using the formula C 4rr / (r - r), where C is the capacitance, is the permittivity of free space, r is the radius of the inner sphere, and r is the radius of the outer sphere.
An object in space that circles around another object is called a satellite. Satellites can be natural, such as moons orbiting planets, or artificial, like man-made spacecraft orbiting Earth.
The space between the legs is called the crotch or groin area.
The joint space station that circles Earth is called the International Space Station (ISS). It is a collaborative project involving multiple space agencies, including NASA, Roscosmos, ESA, JAXA, and CSA. The ISS serves as a microgravity research laboratory and facilitates international scientific collaboration.
The space between the vocal cords is called the glottis. It is the opening between the vocal folds that allows air to pass through when we speak or sing.
The space between letters in printing (or typography) is called tracking.
It is called leading.
space, or outer space
In typesetting the space between lines is called lead or leading. The space between letters is keening.