The term 'Ushanisha' in the context of Buddha images refers to:

The correct option is The hair knot or cranial bump.

Explanation

In Buddhist iconography, the anthropomorphic representation of the Buddha is characterized by specific physical attributes known as Mahapurusha Lakshanas (signs of a great being). These features were standardized during the development of the Gandhara and Mathura schools of art in the Post-Mauryan period to distinguish the Buddha from ordinary humans and deities.

Detailed Analysis

• Ushnisha (Correct): The term Ushnisha refers to the cranial bump or protuberance on the top of the Buddha's head. It symbolizes superior wisdom, spiritual power, and enlightenment. In early Gandhara art, it was depicted realistically as a topknot of hair, while in the Mathura and later Gupta styles, it evolved into a stylized cranial bump covered with snail-shell curls.
• Other Iconographic Features:
  • The garment covering the shoulder is known as the Sanghati (monastic robe).
  • The halo around the head, representing divine radiance, is referred to as the Prabhamandala or Sirachakra.
  • The mark between the eyebrows is called the Urna, symbolizing the third eye or spiritual insight.

Key Takeaway: The Ushnisha is the cranial bump representing wisdom, while the Urna is the tuft of hair or dot between the eyebrows representing insight. Both are essential Lakshanas of Buddha images.