This is the 967th most frequent Finnish word.
nato
The Finnish word "nato" refers to the North Atlantic Treaty Organization (NATO).
In this sentence, the word 'Nato' is used as a proper noun referring to the North Atlantic Treaty Organization.
Nato on puolustusliitto.
NATO is a defense alliance.
Here, the word 'natoon' is the illative case form of 'Nato,' indicating movement toward or joining the organization.
Hän liittyi natoon tukemaan turvallisuutta.
He joined NATO to support security.
In this example, 'Nato-mailla' combines 'Nato' and '-mailla' (meaning 'member countries of NATO'), specifying countries participating in the alliance.