Full Time

Hello Arvind,
The difference as the name suggests is in the mode of study.
Regular courses are classroom session courses where the student has to attend classes while distance/ correspondence courses are more about self-study where the study material is sent to the student and she/he has to understand and learn it on their own. During examination time, the student has to go to the college and appear for it.
The prospects of a full time regular course are better than a correspondence or distance learning course. The acceptability and recognition of a full time course is higher. The Distance learning courses are ideally meant for those who are working and cannot leave their jobs to further education. It is thus an add-on to one's experience and not so much as a stand-alone degree.
So prefer full time regular courses to correspondence unless you cannot get on with it.

Hi Mohith,
#B.Com (Hons) - if you want to study deeply about and go for the highest knowledge in the field.
#B.Com (Hons) in Finance - if you want to go ahead in the field of financial management and cost accounting, business organization and others.
# B.Com (regular) - if you want to go for other fields other than just commerce in future as it offers you with a brief up about almost all the subjects of commerce like business, management, business communication skills, financial accounting, corporate&cost accounting, etc.; (more deep your knowledge will be about the subjects, more will be your preference to pursue for the same).
#B.Com(Hons) - if you want to have a great career as lecturer or professor, because with a high and deep level of knowledge (as the stream provides), these are the best career options after the same.
#B.Com(Computer) - the most demanding career option in B. Com.; it opens up the fields of computers too for you other than the commerce field options.
Hope this will suffice! :)
Good Luck! :)