Stable is a related term of confident.
As nouns the difference between stable and confident
is that
stable is a building, wing or dependency set apart and adapted for lodging and feeding (and training) animals with hoofs, especially horses while
confident is .
As adjectives the difference between stable and confident
is that
stable is relatively unchanging, permanent; firmly fixed or established; consistent; not easily moved, altered, or destroyed while
confident is very sure of something; positive.
As a verb stable
is to put or keep (horse) in a stable.