The difference between Constant and Equable

Constant as an adjective:

Unchanged through time or space; permanent.

Constant as an adjective:

Consistently recurring over time; persistent.

Constant as an adjective:

Steady in purpose, action, feeling, etc.

Constant as an adjective:

Firm; solid; not fluid.

Constant as an adjective (obsolete):

Consistent; logical.

Constant as a noun:

That which is permanent or invariable.

Constant as a noun (algebra):

A quantity that remains at a fixed value throughout a given discussion.

Constant as a noun (science):

Any property of an experiment, determined numerically, that does not change under given circumstances.

Constant as a noun (computing):

An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.

Equable as an adjective:

Unvarying, calm and steady; constant and uniform.

Equable as an adjective (of temperature):

Free from extremes of heat or cold.

Equable as an adjective (of emotions etc):

Not easily disturbed; tranquil.