Here's why:
* Suffix: The "-tion" suffix is often used to form nouns from verbs.
* Meaning: It usually indicates a process, action, or state.
Examples:
* Action: "The action of the play was exciting."
* Process: "The formation of the Earth took millions of years."
* State: "The situation is dire."
Exceptions:
While most words ending in "-tion" are nouns, there are some exceptions. In rare cases, they can be other parts of speech:
* Adjectives: "The national anthem."
* Verbs: "We ration the food."
To determine the part of speech, consider the context in which the word is used.