There are numerous synonyms for the word "flag". Some of the most popular ones include banner, standard, ensign, pennant, streamer, and jack. The term banner is often used to refer to a large, often decorative flag that is typically hung from a building or displayed at a parade. A standard, on the other hand, is typically a military flag that is used to identify a particular regiment or unit. An ensign is another term for a national flag or emblem, while a pennant is a long, narrow flag that is typically used by ships. Streamers and jacks are both small flags that are used for various purposes, such as signaling or decoration.