Question

What is :
1) Rennin
2) Renin

Answer 1

1) rennin-rennin is an enzyme secreted in the stomach
2)renin-it is an enzyme stored and secreted in our kidneys

i hope this help u

Answer 2

Basically 
1)rennin is an EENZYME⇒synthesized by chief cells in the stomach,its primary                                             function is in digestion.
                                            
2)renin is a HORMOne⇒It cause an increase in blood pressure