This is the 8850th most frequent Japanese word.
棚田
Terraced rice fields.
棚田 here represents the area (terraced rice fields) where rice cultivation is taking place.
棚田には稲作が盛んです。
Rice cultivation is flourishing in the terraced rice fields.
Here, 棚田 refers to terraced rice fields in general as a subject of the sentence.
棚田は日本の美しい風景の一つです。
Terraced rice fields are one of Japan's beautiful landscapes.
In this sentence, 棚田 is used to describe a location where the activity of walking happens.