If you are going to encrypt (cipher) more than one block, you need a mode of operation for that.
For example the preferred cipher AES (Advanced Encryption Standard) uses
Key sizes 128, 192 or 256 bits
Block sizes 128 bits
Electronic CodeBook, ECB
Cipher Block Chaining, CBC with random IVs
Counter, CTR with unique nonces (Number only used ONCE)
Counter with CBC-MAC, CCM
Galois/Counter Mode, GCM
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