Homosynonym
Two words or phrases sound like two other words that are synonyms. Example: rose, tears (which sound like “rows” and “tiers”). Unlike most flats, homosynonym bases need not have dictionary nature.
The solution: ONE = soul, TWO = loan (sole, lone).
Enumerations are given for both parts of the solution (though not for the synonyms they sound like).
Ideally, both parts of a homosynonym are spelled differently from the synonyms they sound like. The synonyms should be tagged if necessary, even though they don’t themselves appear in the puzzle.
In a homoantonym, the two words or phrases instead sound like two other words or phrases that are antonyms. Examples: knights, daze [nights, days] or plane, fan see. [plain, fancy]. The rules are otherwise the same as for a homosynonym. The homoantonym was introduced by Quefanon in September 1938.