Question

difference between shares and debentures

Answer 1

 share -The shares are the owned funds of the company.The holder of shares is known as shareholder.Shares represent the capital of the company.
debentures -The debentures are the borrowed funds of the company.The holder of debentures is known as debenture holder.Debt represents the debt of the company.

Answer 2

Identity
Person holding share is known as shareholder. person holding debenture is known as debenture-holder.
Ownership
The share of a company provides ownership to the shareholders. 
Convertibility
Shares can not be converted into debentures. Debentures can be converted into shares.