Is it Ʃ or tʃ?

Understanding the Distinction Between /ʃ/ and /tʃ/

The key difference between the sounds /ʃ/ and /tʃ/ lies in their classification: /ʃ/ is categorized as a fricative, while /tʃ/ is an affricate. A fricative sound can be prolonged, similar to the ‘shhhh’ /ʃ̩ː/, where there is a continuous flow of air. Conversely, an affricate sound is typically brief, despite concluding with a fricative element. For the /tʃ/ sound, it is characterized by a quick burst of air.