Please answer the following questions in detail. Give definitions of the key terms with in-text references in Harvard style.
In relation to company law:
a) Discuss the differences between a public and a private limited company when it comes to selling shares .
b) Explain what rights are attached to the ownership of shares when becoming a shareholder.
c) Elaborate on the procedure that must be followed for distribution of dividends .
With respect to Employment Law and termination of employment:
a) Discuss how a contract of employment may be terminated.
b) Explain the difference between wrongful dismissal and unfair dismissal.