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.
The former requires Sand and Pebbles, whereas the latter needs Sand, Pebbles, and Coal Ore.
Source: https://gamerant.com/disney-dreamlight-valley-farm-sand/