A trench is an excavation defined by its depth being greater than its width. The U.S. Occupational Safety and Health Administration, or OSHA, says that trenches have many safety hazards that trench workers must be wary of. To protect workers from accidents and injuries, trench depth standards are set by OSHA.
Approbation is an official, important-sounding, and somewhat old-fashioned word for approval or praise. A princess, for example, might only consider marrying a prince that is met with her father's, the King's, approbation. How is it possible that approbation means approval when probation is a form of being in trouble in school? Remember that probation is a testing period, to see if you can be good. Approbation means it's all good. Or you can remember this rhyme: Filled with approbation, the audience gave a standing ovation..
Definition: Rebate Rebate is a sales promotion technique in which certain part of the purchase amount is returned to the buyer by the seller. It is usually given on the purchase of a certain quantity or value, product and for a limited period of time.