Both... and (niin... kuin... -kin)

Emphasizing "Both... and..." with "niin ... kuin ... -kin"

In formal Finnish, the correlative structure niin ... kuin ... -kin means "both ... and" or "as well as."

The structure wraps around the two elements you are linking:

  • niin comes right before the first element.
  • kuin comes right before the second element.
  • -kin (meaning "also") attaches to the very end of the second element.

If the linked words are in a specific grammatical case, such as the partitive, the -kin suffix must be added after the case ending.

Many countries use both renewable energy and fossil fuels.
Moni maa käyttää niin uusiutuvaa energiaa kuin fossiilista polttoainettakin.

Adding "-kin" to Other Cases

This rule about suffix order applies to all grammatical cases. Whether you are expressing where something happens or who it benefits, always attach -kin to the very end of the word.

For example, kylissä (in the villages) becomes kylissäkin (in the villages too).

Solar panels reduce the carbon footprint both in cities and in villages.
Aurinkopaneelit vähentävät hiilijalanjälkeä niin kaupungeissa kuin kylissäkin.
Wind power is a good investment both for nature and for the economy.
Tuulivoima on hyvä investointi niin luonnolle kuin taloudellekin.
The new power plant brings renewable electricity to both factories and homes.
Uusi voimala tuo uusiutuvaa sähköä niin tehtaisiin kuin koteihinkin.

Linking Adjectives

This structure isn't strictly for nouns. You can also link adjectives to emphasize that something possesses two distinct qualities at the same time.

This power plant is both efficient and emission-free.
Tämä voimala on niin tehokas kuin päästötönkin.