Fetching details from the dictionary...

year
counter for years (e.g. of an era), grades (e.g. school)
period of an apprentice's contract (usu. ten years)
今は二千二十六年だ。
It's the year 2026 now.
三年前にこの町に引っ越してきた。
I moved to this town three years ago.
何年かかっても必ず完成させるつもりです。
I plan to finish it no matter how many years it takes.