Conditioned Response:This is the learned reaction to the conditioned stimulus. In our analogy above, feeling hungry when hearing the special ringtone would be your conditioned response.
Stimulus Generalization:This is when an organism responds in a similar way to different but related stimuli. For example, if you started feeling hungry when hearing any phone ring after conditioning.
Stimulus Discrimination:This is when an organism learns to respond differently to various stimuli that are similar. For example, only responding (feeling hungry) to your specific pizza-ringtone and not other ringtones.