Axle
Part of speech: noun
Definition: The pin or spindle on which a wheel revolves, or which revolves with a wheel. A transverse bar or shaft connecting the opposite wheels of a car or carriage; an axletree. An axis; as, the sun's axle.
Axis
Part of speech: noun
Definition: An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and such that its points are in one-to-one correspondence with a set of numbers; an axis forms part of the basis of a space or is used to position and locate data in a graph (a coordinate axis).The second cervical vertebra of the spine.Axis axis, a deer native to Asia.