Comparing Consonant Stops and Affricates
How are they alike?
Stops and affricates are alike in that both categories of sounds must breifly and completely restrict the air from leaving the vocal tract at the beginning of their respective sounds.
Additionally, stops and affricates both occur in voiced/unvoiced pairs.
How are they different?
Stops and affricates are different in the nature of the release of the restricted air. Since the release of stops can vary greatly depending on where the sound is within a word and whether it is a voiced sound of not, it is generally more simplistic to say that the affricates are released with the vocal tract constricted enough to create friction as the air passes through. Stops, on the other hand, do not have this feature.