Hi Ashok,
Infact, there is great difference with HR & Admin,HR's have specific role to play like recuritment,Taining & Development,Performance Appraisal and Management, Setting skills of personnel, Greivance handling and preparing Manpower planning of both existing and future and sometimes HR interventions to set right the things in the organaization abd help managemetn by preventing from incurring further losses .
Where as Administration deals with the day to day activities like House Keeping, looking after the office maintainance, logistics, sometime the Central Excercise and State Excercise works will be tied upto the Admin, Liasioning works both within and outside the organisation.Sometimes dealing with Financial Institutions, and any other miscellaneous works, given by the Seniors and the Management from time to time.Some organisations utlize Admin personnel for a bit of Accounts Activities, like clearance of payments to vendors, writing vouchers and cheques etc.
I hope you understood the difference.