我们都知道，no表示“没有，不许，一点儿也没有，决不是”等意思，如“No smoking”，“No Admittance Except On Business”，“No Admittance Except To Employees On Duty”。
Non表示“非，不，无”等含义（non可以与许多词组成复合词，可连写或加连字符；但若后面的词的词首为大写时，则必须加连字符，如：non-EU countries），如non-smoker（不吸烟者或非吸烟者），Non-smokers live longer, healthy life（非吸烟者健康长寿）；而“No smokers would believe that secondhand smoke is harmful to non-smokers' health”意味著“没有吸烟者会相信二手烟对不吸烟者的健康有害”，或“吸烟者根本不会相信二手烟对非吸烟者的健康有害”！
例一：Non-government organizations are supportive to this project. (非政府组织支持这个项目）
No government organizations are supportive to this project. (没有政府组织支持这个项目，或政府组织决不会支持这个项目）
例二：Unregulated lenders and non-U.S. banks will probably step into the breach. 这里的“non-U.S. banks ”是指非美国银行或美国以外的其他国家银行。
而“No U.S. banks will probably step into the breach”中的“no U.S. banks”是指没有美国银行，也就是说，“U.S banks will probably refuse to step into the breach”。
例三： “Performance of the regression model is assessed using statistical goodness-of-fit metrics and a qualitative review to determine which combination of the proxies provides both the optimum predication of landslide-affected areas and minimizes the false alarms in non-landslide zones”中的“non-landslide zones”是指非滑坡区，也就是还没有发生滑坡的区域；但“no landslide zones”为没有滑坡的区域，也就是所涉及的区域不存在滑坡灾害或不会发生滑坡。
例四：“Approximately 5% of all earthquake-related fatalities are caused by seismically induced landslides, in some cases causing a majority of non-shaking deaths”中的“non-shaking deaths”是指非地震死亡，也就是死亡不是直接由地震导致的。
例五：No employee who works so hard for so little money deserves this and no human being in the world deserves this.... Although the video is receiving international attention, Toronto police told CTV News Toronto that they aren’t investigating the encounter as a hate-related incident and said that no official complaint had been filed.
例六：American warplanes bombed an Iranian-backed militia that entered a supposed no-go zonenear a U.S garrison in southern Syria on Tuesday.
例七：The invasion of the city comes as no surprise, as the SDF has been encircling the city for months, and U.S. airstrikes have been bombing Islamic State positions for much of the past year.
例八：There is no organization claiming responsibility for the billboard. Shahid said the billboard also doesn't bear any company name, indicating that it is privately owned...."It's just a group of cowards who are not even ready to put their name behind it," Shahid said as she expressed the pain she felt to see this billboard in the midst of Ramadan.