Concept:
The Morung is a traditional indigenous educational institution among the Naga community. It acts as a dormitory and training center where elders teach younger generations about social values, customs, warfare, and tribal history.
• It is an informal education system.
• Preserves tribal culture and traditions.
• Teaches discipline, ethics, and survival skills.
Step 1: Understand the purpose of indigenous learning systems.
These systems were used before formal schools and focused on:
Culture + History + Ethics + Warfare
to train the youth.
Step 2: Identify the community and system.
Among the Nagas, this institution is known as:
Morung
It is an important cultural center.
Step 3: Eliminate other options.
• Oraon -- Dhumkuria (different tribal institution)
• Muria -- Ghotul (tribal youth dormitory)
• Kabri -- Jirkedam (incorrect here)
• Naga -- Morung (correct)
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Naga, Morung}}
\]