This is the 6690th most frequent French word.
kallio
"Kallio" is not a French word; it is Finnish, meaning "rock" or "cliff."
Here 'kallio' is used as a noun to describe a geographic feature.
Le kallio est une formation rocheuse trouvée en Finlande.
A kallio is a rock formation found in Finland.
Here 'kallio' is again a noun describing a place being explored.
J'ai exploré un kallio près du lac.
I explored a kallio near the lake.
Here 'kallio' is used in the plural form to indicate several rock formations.