Technically, each HEX private key can be used to generate 2 addresses (compressed/uncompressed)... as far as I'm aware, Bitcoin Core currently deals only in compressed addresses... and when you dump the WIF keys, a WIF key has a 1:1 relationship with an address. The WIF starts with either "5" = uncompressed or it starts with a "K" or "L" = compressed.

Unless you're referring to xprvs... aka "Master Private Key"... which are derived from the "seed".