This is the 42nd most frequent Icelandic word.
ára
The Icelandic word "ára" means "oars" (plural of "ár") or "years" depending on context.
In this sentence, 'ára' is used in the accusative plural form of 'ár', referring to years as a measure of time.
Ég hef búið hér í fimm ár.
I have lived here for five years.
In this sentence, 'ár' is used in the nominative plural form and describes a period of time significant for biological growth.
Ár eru mikilvæg fyrir þróun trjáa.
Years are important for the development of trees.
In this usage, 'ára' is used in a genitive plural form indicating ownership or association, here relating to years characterized by water abundance.