They  are   3   different   types  of  basil. 

BASIL: Another popular food additive that can be taken to relieve gas, stomach cramps, nausea, headaches, fevers, colds and anxiety. Applied externally, basil oil can help with cuts, wounds, bites, and as a face wash for acne. It is also used in hair rinses for shine.

Caution: Basil should not be taken in early pregnancy