* New words are constantly being created. The English language is dynamic, and new words are constantly being added.
* "Tion" is a suffix, not a standalone word. "Tion" is a suffix often added to verbs to form nouns. This means the number of "tion" words will depend on how many verbs have that possibility.
* Different dictionaries have different definitions. There's no one official dictionary that defines every word in English.
To get a sense of how many "tion" words exist, you could:
* Consult a large dictionary: Look for words ending in "-tion". However, this won't be exhaustive.
* Use a linguistic database: Some databases might have statistics on word suffixes.
* Research online: Search for "words ending in tion" and see what you find.
Remember, any answer you get will be an estimate, as the number is constantly changing.