This is the 7940th most frequent Japanese word.
売
"売" means "sell" in English.
Here, '売' (sell) is used as a verb in its plain form '売ります', indicating an action of selling something.
私は毎週古本を売ります。
I sell used books every week.
In this sentence, '売' is used in its passive form '売られている', describing the state of products being sold in the store.
この店には多くの商品が売られています。
Many products are sold in this store.
Here, '売' is part of the compound verb '売り込む', which means to actively promote or pitch something, extending its original meaning of selling.