The short answer to your question is - There is not much difference between Soul (Atman) and Kundalini. They are just the different names or perspectives of the same principal. To be more specific, Kundalini is a major part, but not complete, of awareness or the Atman (Sanskrit) that we call as Soul (English).
Jīva. (Jainism) Jīva ( Sanskrit: जीव) or Ātman ( / ˈɑːtmən /; Sanskrit: आत्मन्) is a philosophical term used within Jainism to identify the soul. [1] As per Jain cosmology, jīva or soul is the principle of sentience and is one of the tattvas or one of the fundamental substances forming part of the universe.Soul cannot exist without atma whereas atma does not need a soul to exist. Since atma is a miniscule form of mine, it is self illuminating. The miniscule form of mine that exists in your body is called jiva atma. This is so because this gives light only to a particular jiva. My absolute form is called para atma or paramatma.
What is a soul? What is the relation between Atma (soul) and Paramatma (Supersoul) ? How to get liberation from material sufferings?
The individual soul and Supersoul are compared to two birds which reside in the same tree. One of them (jiva-atma) is eating the fruits of the tree, while the other (param-atma) is just witnessing the activities of his friend. The witness is the Lord, and the fruit-eater is the living entity. The fruit-eater (living entity) which is overcome byTYPES OF SOULS [atma] 1) jiva-atma - the individual soul, known as the living entity 2) param-atma - the Supersoul, known as the Supreme Lord, who resides in the hearts of all living entities as the witness. Both the Supreme Lord and the living entity are known as atma.
Both of you have asked many questions on the Nature Of Atma (Soul). Firstly, Atma (Soul) is a spark from the Supreme Lord Krishna who is the Paramatma, and it has no feeling for itself, but, it makes the senses to feel something. Atma (Soul) can be perfectly compared to electricity. .