Although few databases would document finer distinctions, antonyms can be further categorized as:
complements--terms whose concept constitutes the reciprocal value of the concept represented by a second term, whereby the sum of the complementary concepts constitute a kind of whole; example: yin/yang; drag coefficient/free-running characteristic
contrasts--terms or words whose concept exhibits marked difference from or opposition to the concept represented by a second term; example: red : green; black : white 

Links to antonyms can focus on either the concept level (term entry or sense level) or on the term that represents the antonym concept (term section level).
