Opposites are not confined to specific words such as yes-no, black-white, male-female etc. The weather may be described as horrible, wet, ghastly, dismal and so on, or conversely great, lovely, fantastic, beautiful etc. Each of these examples are opposites, but the words themselves may not be opposites. It is the meaning imparted by their use that determines this. The term "in opposition" is not applicable in this instance.