This structure indicates that two actions or situations coexist and supplement each other. Both of them are used to support the previous statement. This structure can be used to make an optimistic prediction, meaning that “in less than a certain period of time, the subject will be able to do sth. that he/she is unable to do at the moment.” This structure, often related to one's Financial ability, denotes The Improvement of one's life. “…On the contrary/quite the contrary…” is used to form a contrast with The previous statement, or to Simply State That the opposite of what was said before is true. Sam, you had again one over the eight last night! You should have this dictionary always at your elbow. This job needs a great deal of elbow grease. We'll move to an office in which we'll have more Elbow Room. That man Looked out at elbows. They often crook their elbows in that Tavern.