available;  enabled;  can be used;  may be used
 used (ticket, stamp, etc.);  spent (fuel, battery, etc.)
 in use;  occupied (e.g. toilet);  engaged
 how to use (something);  usage instructions;  directions (for usage);  use;  usage
 prohibition of use (of);  ban on using (something)
 directions;  instructions;  usage method
 after use;  after occurring
 one's impression of a product after trying it out;  feel of a product (during use);  usability;  signs of use (of a product);  wear and tear
 intended use;  intended purpose
 expiry date;  use-by date;  date of expiry
 example of use;  usage example;  use example
 utilization rate;  usage rate;  occupancy rate
 before use;  pre-service;  pre-operational
 disuse;  not using;  non-usage
 personal use;  private use
 improper use;  wrong use;  misuse;  mishandling;  abuse
 (software) license agreement
 user parameter control;  UPC
 usable distance (of a fiber)
 usability test;  fitness-for-use test
 short reference use declaration
 reserved name use parameter