Metric Units:
* Kilogram (kg): A unit of mass equal to 1000 grams.
* Kilometer (km): A unit of distance equal to 1000 meters.
* Kilowatt (kW): A unit of power equal to 1000 watts.
* Kiloliter (kL): A unit of volume equal to 1000 liters.
* Kilohertz (kHz): A unit of frequency equal to 1000 hertz.
* Kilobyte (kB): A unit of digital information equal to 1024 bytes (often rounded to 1000 bytes).
Other Words:
* Kilocycle: A unit of frequency equal to 1000 cycles per second (now usually replaced by kilohertz).
* Kiloton: A unit of explosive power equal to 1000 tons of TNT.
* Kilopond (kp): An obsolete unit of force equal to 9.80665 newtons.
These are just a few examples. There are many other words that use "kilo" as a prefix, especially in scientific and technical fields.