Question: what is the basic difference between sha-224 and sha-512/224?
Answer: SHA-512 and its two truncated variants (SHA-512/224 and SHA-512/256) belong to the SHA-2 family of cryptographic hashes. The three functions produce the digest of a message, respectively 512, 224 or 256 bits long. SHA-512 is roughly 50% faster than SHA-224 and SHA-256 on 64-bit machines, even if its digest is longer.