An API for words
Retrieves a list of string keys used for word lookup in other endpoints.
Retrieves uniform randomly-chosen words for the keys, which should be comma-separated (e.g., /uniform/a1,b2,c3 to receive 3 chosen words from the keys "a1", "b2", "c3"—if those keys exist).
Returns { data: Array<null | string>, warnings: Array<string> }.