E-kyc is Aadhaar OTP-based KYC (know your customer) verification required to open an account. This is not a full KYC so you can have a maximum of Rs 1 lakh deposited throughout the year.  C-KYC is known as central KYC; it is also called a full KYC; you need only the 14-digit code to open a full KYC account with no limitations.