Define the following terms:
$(i)$ Inhibitors
$(ii)$ Catalyst

(N/A) $(i)$ Inhibitors: These are chemical substances that decrease the rate of a chemical reaction or prevent it from occurring by binding to the active site of an enzyme or reacting with the catalyst.
$(ii)$ Catalyst: $A$ catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.