Simplify the following text for a Grade 10 native English-speaking person.
Original: Although black pepper and Sichuan pepper cause similar burning sensations , they are caused by different substancesâ '' piperine and hydroxy-alpha sanshool , respectively .
Simplified: Black pepper and Sichuan pepper cause similar burning sensations . These are caused they by different substances though â '' piperine and hydroxy-alpha-sanshool , respectively .