: Pairs that describe a relationship from opposite perspectives (e.g., buy/sell , teacher/student , parent/child ).
: Words on a scale that allow for varying degrees (e.g., hot/cold —it could also be "warm" or "lukewarm"). antonym
: Pairs where there is no middle ground. If it is one, it cannot be the other (e.g., pass/fail , dead/alive ). : Pairs that describe a relationship from opposite