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Questions & Answers about Laivasto lähtee saaristosta.
Both laivasto and saaristo end in -sto. How does this suffix change the meaning of the base words?
The -sto suffix forms a collective noun, meaning a group or system of the base word. Adding it to laiva (ship) creates laivasto (a fleet or navy). Adding it to saari (island) creates saaristo (an archipelago or group of islands).
Why do these words use -sto instead of -stö?
This is due to vowel harmony. Because the base words laiva and saari contain back vowels (a), they take the back-vowel version of the suffix (-sto). If the base word only had front vowels like ä, ö, or y (for example, henkilö, meaning person), it would take -stö to become henkilöstö (staff or personnel).
Could I just say saarista instead of saaristosta?
You could, but the meaning shifts slightly. Saarista is the plural elative form of saari and just means 'from the islands' (referring to them individually). Saaristosta uses the collective noun saaristo and means 'from the archipelago,' treating the whole island group as a single geographic entity.
Why is saaristosta in the elative () case here?