Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Whether you're using a Mac or a MacBook, the serial number (denoted by "Serial") should be printed along the hardware's bottom or side.
Source: https://www.slashgear.com/1161521/how-to-find-your-macs-serial-number-and-why-you-might-need-to/