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.
To do this, open the Apple Watch app again and tap on ‘My Watch’, then select ‘Edit’ next to the watch face that cotains your custom photo.
Source: https://www.devicemag.com/how-to-change-photos-on-apple-watch/