General experts:
* विद्वान् (vidvān): This is the most common and general term for someone learned or knowledgeable in any field. It literally means "one who knows."
* पण्डित (paṇḍita): This refers to a learned person, especially one who is skilled in religious or philosophical matters. It implies a deeper understanding and mastery of knowledge.
* ज्ञानी (jñānī): This means "knowledgeable" or "wise" and is often used for someone who has a profound understanding of the world and life.
Experts in specific fields:
* शास्त्रज्ञ (śāstrajña): This refers to an expert in a particular science or subject.
* तत्वज्ञ (tatvajña): This means "one who knows the essence" and indicates an expert in a specific field or area of study.
* कुशल (kuśala): This refers to someone skilled or proficient in a particular art, craft, or profession.
Other related terms:
* निरूपक (nirūpaka): This refers to someone who explains or interprets a particular subject.
* व्याख्याता (vyākhyātā): This means "explainer" or "commentator" and is often used for someone who clarifies a complex topic.
The best word to use will depend on the specific context and the type of expertise you are referring to.