Just words.
Neither condition actually exists (there is no place without gravity),
but in "free fall" you can't feel the effects of gravity.
No. Gravity is a force with unlimited reach. Gravitys grip-force decreases with an increase in the distance between bodies. In a nutshell, there is no zero gravity, but there is very close to zero gravity. In the deep space between and at extreme distances from any galaxies we find what is effectively zero gravity.
Zero. In general, the difference between any number and itself is zero.
Mass is the quantitiy of matter. But weight is the force of pull on the mass due to gravity. So mass is invariant where as weight depends on the gravity. If acceleration due to gravity is zero, then weight too becomes zero. So in free space mass exists but weight vanishes.
There is no difference in value between "equal" fractions: the difference is zero.
infinite
Zero! that's why it is called zero gravity!
Nought is just another word for zero.
the difference between two equal fractions is zero.
The difference between anything and itself is zero.
Zero.
zero gravity
Depends on the atmosphere. location, place, space and time of zero gravity