In WordData the basic unit is sense and there are no entries for lexemes. e.g. this refers to three Wikidata lexemes and 9 senses. See as an example here: if you query for synonyms of "group" it will first query all senses (verb and noun) of "group" and find synonyms of each senses. See Wikidata:Property proposal/Wolfram language WordData sense.
- WordData["group", "Synonyms"] works like {x:[i.lemma for i in synonyms(x)] for x in senses("group")}
- WordData["group", "Synonyms", "List"] works like sum([[i.lemma for i in synonyms(x)] for x in senses("group")],[])
- WordData["group", "Synonyms", "Rules"] works like {x:[i for i in synonyms(x)] for x in senses("group")]