garden: [14] Ultimately, garden and yard are the same word. Both come from prehistoric Germanic *gardon, but whereas yard reached English via a direct Germanic route, garden diverted via the Romance languages. Vulgar Latin borrowed *gardon as *gardo ‘enclosure’, and formed from it the adjective *gardīnus ‘enclosed’. The phrase hortus gardīnus ‘enclosed garden’ came to be abbreviated to gardīnus, which gave Old Northern French gardin, the source of the English word (more southerly dialects of Old French had jardin, borrowed by Italian as giardino). => yard[garden etymology, garden origin, 英语词源]