Clichés

Clichés are words or expressions that become stale from overuse. Clichés often take the form of metaphors or comparisons, such as "big as an ox" or "slept like a log." They are trite and show a lack of originality in writing.

In business, expressions such as "put on the back burner" and "caught between a rock and a hard place" have been used so often that they can be considered clichés. Nothing is grammatically wrong with these trite expressions. They are just so stale that they really have lost the power to convey much meaning to the reader.