St. Andrew's Cross, also known as the Saltire, is a diagonal cross symbol that is commonly associated with Scotland. However, there are other words that can be used to refer to this emblematic symbol. Some of the synonyms include the Scottish flag, the national flag of Scotland, the white cross on blue, the Scottish Cross, and the Cross of St. Andrew. These synonyms can be used interchangeably with the St. Andrew's Cross in different contexts, whether it's referring to the Saltire's historical and cultural significance or its modern-day representation in art and design.