"axis" - key terms from Wikipedia

ap axis
axis
axis	forces
axis	mundi
axis	occupation
axis	of anarchy
axis	of evil
axis	of justice
axis	of rotation
axis	of symmetry
axis	of terror
axis	of the rotation lay
axis	powers
axis	powers of world war
bent axis
celestial axis
central axis
dark axis
double axis	tourbillon
each axis
horizontal axis
hpa axis
lens axis
long axis
longitudinal axis
major axis
minor axis
neutral axis
new axis
one axis
optic axis
optical axis
parallel axis	theorem
pivot axis
polar axis
principal axis
real axis
roll axis
rotation axis
rotational axis
semimajor axis
single axis	tracker
sinuous axis
spin axis
steering axis
transverse axis
ventral axis
vertical axis
world axis
z axis