Good tip, how to learn 50000 words at once. I've known it when I watched lessons of English of one famous polyglot.

So, there are about 50000 words in English that have endings [-tion], [-sion]. In Russian language there is analogue - [-ция], [-сия]. Let's see what it is meant:

Globalization - ГЛОБАЛИЗАЦИЯ
Nation - НАЦИЯ

Authorization - АВТОРИЗАЦИЯ
Administration - АДМИНИСТРАЦИЯ
Proection - ПРОЕКЦИЯ
Provocation - ПРОВОКАЦИЯ
Profession - ПРОФЕССИЯ
Delegation - ДЕЛЕГАЦИЯ
Depression - ДЕПРЕССИЯ
Modernization - МОДЕРНИЗАЦИЯ
Rezervation - РЕЗЕРВАЦИЯ

And there are about 50000 common words up to this rule!

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