I was wondering if all Crypto Wallets have a backup phrase typically 12 to 24 randum words the system generate and which you use to restore your wallet.
For instant NanonLedger S has 24 words while Exodus has 12 words / Backup Phrases.
These are "standards" such as BIP-32 and BIP-44 (https://medium.com/@harshagoli/hd-wallets-explained-from-high-level-to-nuts-and-bolts-9a41545f5b0), but each wallet could handle this differently. Essentially, those random words are a crafty way to start a sequence of deriving public/private keys for bitcoin addresses that will always follow the same pathway. Becuase there are so many words, the chance of guessing one that's already been done is basically impossible.
passphrase is common method for higher security level . imagine your backup phrase is ' 12 blue ducks in black sea' this much harder to crack than regular passwords .
You're comparing apples to oranges. Or more like comparing a backup key and a secondary lock.
If you write down your seed words on paper and store it somewhere, that can work as a backup.
If you use an additional phrase / additional word for your wallet, that functions as an extra step in case someone got access to your seed words or to your hardware wallet - having access is not enough, he/she also needs to know the additional phrase/password which can be in your brain only.
You probably shouldn't print your private key on paper, unless you have some specific reason forthat.
Hi! I use a bit other option 'cos for me usual online crypto wallets don't seem reliable enough. I use a prepaid euro card balckcatcard with a hot crypto wallet linked to it. I just make a crypto-fiat or fiat-crypto exchanges from the wallet to the account and store crypto or pay with fiat anywhere mastercard is accepted