shrinkage
noun1.the act or fact of shrinking.2.the amount or degree of shrinking.3.reduction or depreciation in quantity,value,etc.4.contraction of a fabric in finishing or washing.5.the difference between the original weight of livestock andthat after it has been prepared for marketing.
con·trac·tion
noun1.an act or instance of contracting.2.the quality or state of being contracted.3.a shortened form of a word or group of words,with theomitted letters often replaced in written English by anapostrophe,as e'er for ever,isn't for is not,dep't fordepartment.4.Physiology .the change in a muscle by which it becomesthickened and shortened.5.a restriction or withdrawal,as of currency or of fundsavailable as call money.
这是我帮你查的字典.其实遇到这种问题,你可以直接查字典的哈.