Bitcoin Custody 101:

Your HWW is only a custodian of your seed.

The seed generated by your HWW is just a random generator which goes fishing in the Bip39 word list

The Bip39 word list is a set list recognized by bitcoin consisting of 2048 specific words

Your Bip39 seed cannot be any word to ever exist

You can generate your own seeds without the HWW by printing out the list, cutting it up and randomly selecting out of a jar.

#selfcustody