This is the 3245th most frequent Japanese word.
宣伝
Advertisement; publicity; propaganda.
In this sentence, '宣伝' (advertisement/publicity) is used to refer to a promotional message seen on television.
この製品の宣伝をテレビで見ました。
I saw an advertisement for this product on TV.
Here, '宣伝' describes the advertising poster specifically created for promoting the new movie.
新しい映画の宣伝ポスターが駅に貼られている。
The advertisement poster for the new movie is posted at the station.
In this context, '宣伝' is used more abstractly to indicate the concept or act of promoting a product.