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                   877 Points
                   Joined July 2008
                
               
			  
			  
             
            
             SivaRaman
Deduction means any expenditure is allowed at the time of calculating the income for the purpose net income libale for tax.............
Exemption means any income which you earned  but it is not taxable OR exmpts from taxability
AOP means Association of person & PERSON includes Individual,Company.HUF,Society Firmetc.(As per income Tax)
BOI means only a group of individual ...........AOP is a wider term than BOI
Hope you understand all these things...................