Answer

In Jain Dharma, Chaturthi and Pancham usually refer to the 4th and 5th Tirthankars:

• Chaturthi Tirthankar means the 4th Tirthankar: Bhagwan Abhinandannath
• Pancham Tirthankar means the 5th Tirthankar: Bhagwan Sumatinath

Explanation

Jainism has 24 Tirthankars in the present time cycle. The 4th and 5th among them are:

• 4th Tirthankar – Bhagwan Abhinandannath
• 5th Tirthankar – Bhagwan Sumatinath

A Tirthankar is a liberated soul who shows the path to moksha by teaching right faith, right knowledge, and right conduct.

Takeaway

So, Chaturthi Jain refers to Bhagwan Abhinandannath, and Pancham Jain refers to Bhagwan Sumatinath, the 4th and 5th Tirthankars of Jain Dharma.