This is the 8411th most frequent Chinese word.
oliver
The word "oliver" is not a Chinese word.
In this sentence, 'Oliver' acts as the proper noun for someone's name, indicating the subject of the sentence.
奥利弗喜欢在花园里种花。
Oliver likes planting flowers in the garden.
Here, 'Oliver' is used as part of a proper noun for a business name, giving identity to the store.
奥利弗书店有很多有趣的书籍。
Oliver Bookstore has many interesting books.
Once again, 'Oliver' serves as a proper noun referring to a specific individual whose profession is being described.