Then why the difference in words like the scenario OP faced.
I thought they had same number but quite different words.
I alrady answered this in my previous post.
Electrum started to use BIP39 wordlist in the version 2.0 which was released in 2015. Before that, electrum had a different wordlist.
Electrum still allow you to import old seeds even if you use new versions and that's why it suggests words from the old wordlist too.
To be clear I generated seed words from newer version of Electrum. I don't know exact version but I run it from Tails OS that is maximum 1 year old, so it is definitely not Electrum older than 2015.
Next time wnen I run Tails I'll check version of Electrum to be 100% sure what is its version.