Reserve
Part of speech: verb
Definition: To keep back; to retain. To keep in store for future or special use. To book in advance; to make a reservation. To serve again (e.g. a tennis ball).
Part of speech: noun
Definition: The act of reserving, or keeping back; reservation; exception. That which is reserved, or kept back, as for future use. A natural resource known to exist but not currently exploited. Restraint of freedom in words or actions; backwardness; caution in personal behavior. A tract of land reserved, or set apart, for a particular purpose; as, the Connecticut Reserve in Ohio, originally set apart for the school fund of Connecticut; the Clergy Reserves in Canada, for the support of the clergy. A tract of land set apart for the use of an Aboriginal group. (Compare US .) A body of troops kept in the rear of an army drawn up for battle, reserved to support the other lines as occasion may require; a force or body of troops kept for an exigency. Funds kept on hand to meet planned or unplanned financial requirements. A member of a team who does not participate from the start of the game, but can be used to replace tired or injured team-mates.
Example sentence: The more I see of deer, the more I admire them as mountaineers. They make their way into the heart of the roughest solitudes with smooth reserve of strength, through dense belts of brush and forest encumbered with fallen trees and boulder piles, across canons, roaring streams, and snow-fields, ever showing forth beauty and courage.
Book
Part of speech: verb
Definition: To reserve (something) for future use.To penalise (someone) for an offence.To travel very fast.To write down.To receive the highest grade in a class.
Part of speech: noun
Definition: A collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc. If initially blank, commonly referred to as a notebook.A long work fit for publication, typically prose, such as a novel or textbook, and typically published as such a bound collection of sheets.A major division of a long work.A record of betting (from the use of a notebook to record what each person has bet).A convenient collection, in a form resembling a book, of small paper items for individual use.The script of a musical.Records of the accounts of a business.A long document stored (as data) that is or will become a book; an e-book.A colloquial reference to a book award, a recognition for receiving the highest grade in a class (traditionally an actual book, but recently more likely a letter or certificate acknowledging the achievement).four of a kind
Example sentence: You cannot open a book without learning something.