Final answer:
The shared trait with varying significance in different cultures is known as a cultural universal. Cultural universals are patterns or traits globally common to all societies, yet they are manifested differently across cultures, contributing to collective identity.
Step-by-step explanation:
The shared trait that has different importance in different cultures is known as a cultural universal. These are patterns or traits that are globally common to all societies, such as the family unit, funeral rites, weddings, and celebrations of births, though they are expressed differently among various cultures. For instance, family structures differ significantly between societies, profoundly deep and consequential traits like these create a common identity for those who share them. Cultural universals can also include certain behaviors, customs, and even body language that are recognized across different cultures.
Cultures also contain a collective unconscious, which consists of common psychological tendencies inherited from past generations, shaping behaviors and beliefs. Despite these universal elements, cultural differences, such as language structures, conversational etiquette, and social norms can be far more prevalent, reflecting the diverse ways in which people around the world express their cultural identities.