Yard is a unit of length.

Year is a unit of time.

SQLSavepoint[...] is an object that represents a savepoint in an SQL transaction.

SQLServerLaunch[{name -> location, ...}] launches a database server that hosts access to the databases specified in the parameters.

FrontEndSharedQ[link] returns True if the front end is being shared with a specified link, and returns False otherwise.

GetClass[javaobject] returns the JavaClass that identifies the object's class.

GetJavaException[] returns the Java Exception object that was thrown in the most recent call from Mathematica to Java.

JavaLink[] returns the MathLink LinkObject that is used to communicate with the J/Link Java runtime.

JavaObject[] is used to denote an expression that refers to an object residing in Java.

JavaObjectQ[expr] gives True if expr is a reference to a Java object or Null, and gives False otherwise.