* Masculine vs. Feminine: While the lingam represents the masculine principle, the yoni (the female genitalia) is a complementary symbol representing the feminine principle in Hinduism.
* Creation vs. Destruction: The lingam symbolizes creation and fertility. However, Shiva is also known as the destroyer, so you could argue that destruction is a contrasting concept to the generative power of the lingam.
* Positive vs. Negative: The lingam is considered auspicious and positive. Some might argue that negative energy or chaos could be considered opposites in a metaphorical sense.
It's important to remember that these are not precise opposites, but rather concepts that offer different perspectives on the multifaceted symbolism of the lingam.