Hello Aswin,
Dynamic Registration and Dynamic Forms are two separate products for valid reasons. Dynamic Registration is geared more to a user account creation experience. Dynamic Forms is geared more towards user input experiences.
There are many similar features in Dynamic Registration and Dynamic Forms, please review this blog post to get an idea of these product differences:
http://www.datasprings.com/news/blo...rectory-dy Let me know if you have any questions.
Thanks,
Ryan