Turns Ratio and Transformation Ratio
Transformation Ratio:
http://www.electrical-engineering-assignment.com/voltage-transformation-ratio-k


  The transformation ratio is defined as the ratio of the secondary voltage to primary voltage.


And Turns Ratio would be the number turns of the primary winding to the secondary winding (edit: those were swapped originally).  Some transformers have multiple secondary windings as well to create multiple outputs.
More if there are more secondary turns than primary turns, the secondary voltage will be higher than primary voltage, and if fewer, the secondary voltage will be lower than primary voltage.