Second base is a term that is commonly used in baseball to describe a player's progression from the first base towards the third base. However, there are several other synonyms that are often used by baseball enthusiasts to describe this action. Some of these include 'stealing second', 'running to second', 'advancing to second base', 'moving to second', 'getting to second', and 'reaching second base'. That being said, while all of these terms may be used interchangeably, each one adds a slightly different nuance to this action of progressing from the first base to the second base.