To explain further, conditioning is achieved through making connections between a stimulus and a particular behavior or between different stimuli.
In both classical conditioning and operant conditioning, extinction may occur in the behaviors. This means that conditioned responses diminish in both when conditioning factors are withdrawn. Additionally, the same behaviors will also recover spontaneously when conditioning is reapplied.
Stimulus generalization occurs in both classical and operant conditioning. Stimulus generalization is the reaction of the subject to other stimuli similar to the conditioned stimulus, for instance, developing a fear of all cats after being scratched by one.
In classical conditioning learning is passive, or the learner is the object, while in operant conditioning the learning is active or the learner is subjected to the consequence.
In addition, classical conditioning associates two stimuli while operant conditioning associates an action with a consequence.