panchajanya
If you are asking about Lord Krishna's Shankh (they used in Mahabharat) then It's name Panchjanya
First of all he is not krishna's son but is of Lord Shiva's son and his name is God Ganesha
Suryadev - Lord Sun was the father of Karna
In 9 ratno there is kaustubh mani which is located in Lord krishnas crown
The original name of the Mahabharata is Mahabharata.
Gandiva is the bow used by Arjuna. The bow was given by Lord Agni.
Kapi Dhwaja (The Chariot With Monkey Lord, Hanumana on it's flag)
mace - Gadha
No, Roshvik is not the name of the chariot (rath) of Lord Krishna. The name of Krishna's chariot during the great Kurukshetra War, as described in the Mahabharata, is typically referred to as "Vijaya." Krishna served as the charioteer for Arjuna, guiding him during the battle.
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jayasanhita
Jaya