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.
I am personally not seeing things to know boxes for my test queries and according to RankRanger, Things to know is no longer showing up for most, if not all, search result pages.
Source: https://www.seroundtable.com/google-search-things-to-know-dropped-36057.html