Fun facts almost one third (1/3) of English language vocabulary are similar to French. To be exact most of the professional and legal version of the English words are taken from French. Hence if you understand English, you can read short notice or announcement in French, and understand them mostly. But if you have people spoken the same notice and announcement in French version to you without you reading it, most probably you won't understand most of the same sentences.
Plus there is another 1/3 coming from Latin which French speakers has no issue understanding either. English is basically akin to a dumbed down pidgin of French (exponentially less verb conjugation, no gender agreement, less pronouns with the thou/you merge, less articles and annoying small words, etc.) starting over a Germanic core.