"First directors" means those directors who hold office form the date of incorporation of the company. The first directors are usually named in the articles of association or are appointed by the directors.

An Executive director is a Chief Executive officer (CEO) or Managing director of an organization, company, or corporation, who is responsible for making decisions to complete the mission and for the success of the organization.

A Managing Director is one who is employed by the company and has substantial powers of management over the affairs of the company subject to superintendence, direction and control of the board.

A whole time Director is one who devotes whole of his time of working hours to the company and has a significant personal interest in the company as the source of his income.

'A Person who is appointed or elected member of the Board of Directors of a company and has the responsibility of determining and implementing policies along with others in the board. It is not necessary to, hold any shares in the company or be an employee. Directors act on the basis of resolutions made in the Board of Directors meeting according to their powers stated in the Articles of Association of the company''.

The Governing body of a Company incorporated under the Companies Act called Board. It is a group of individuals called directors, elected to represent the views of shareholders of a public limited company and to manage the company affairs by establishing policies and implementing them to achieve the goal. In General, the Board is empowered to
(i) Set the Policies
(ii) Restructure the objectives
(iii) Evaluate the performance of Managing Director and Senior Executives
(iv) Exercise overall Direction
(v) Adopt by laws
(vi) Determine and pay the dividend
(vii) Issue additional shares.

Causal vacancy is a situation in which a seat in a delibrative assembly becomes vacant during that assembly's term, casual vacancies may arise through the death, resignation or disqualification of the sitting member or for other reason.

A person who is not the member of Board but has some power to run it can be appointed as the director but according to his/her wish.

(i) An Executive Director can be either a whole-time Director of the Company or a Managing Director.
(ii) But a Non-Executive Director is a Director who is neither a Whole-time Director nor a Managing Director.

l. Collective duties of directors:
Directors as a part of Board perform certain duties collectively.
(i) Approval of annual accounts and authentication of annual accounts
(ii) Appointment of First Auditors
(iii) Issuance of Notice and Holding of Board meetings and shareholders meetings
(iv) Passing of resolutions at board meetings or by circulation.
2. General duties of Directors:
(i) Structuring or new policy to reach the objectives of a company.
(ii) Acting in accordance with the Articles of the company
(iii) Act in Good faith in order to promote the objects of the company
(iv) Perform duties with due and reasonable care and diligence.
3. Specific Duties of Directors
(i) Duty to disclose his name, address and occupation
(ii) Duty to disclose his shareholding and interest in Contracts of the company.
(iii) Duty to hold minimum qualification shares within two months after his appointment.
(iv) Duty to issue prospectus and fix the minimum subscription.
(v) Duty to take care that prospectus should not contain any false or misleading statement.
(vi) Duty to carry out all other activities as specified in the Act in time.

A person shall not be capable of being appointed director of a company, if the director is
(a) Of unsound mind.
(b) An undercharged insolvent.
(c) Has been convicted by a court for any offence involving moral turpitude and sentenced in respect there of to imprisonment for not less than six months.
(d) Has not paid any call in respect of shares of the company held by him, whether alone or jointly with others.
(e) An order disqualifying him for appointment as director has been passed by a court in pursuance of section 203.
(f) He has been convicted of the offence dealing with related party transactions under section 188.
(g) He has not got the Director Identification Number.

 Types of directors as per companies Act, 2013
(i) Residential Director: According to section 149(3)of Companies Act 2013. Every company should appoint a director who has stayed in India for a total Period of not less than 182 days in the previous calender year.
(ii) Independent Director: An independent director is an alternate director other than a Managing Director who is known as Whole Time Director or Nominee Director.
(iii) Small Shareholders Directors: Small shareholders can appoint a single director in a listed company.But this action needs Commerce a proper procedure like handing over a notice to at least 1,000 Shareholders or 1/10th of the total shareholders. 
(iv) Nominee Director: A director nominated by any financial Institution in pursuance of the provisions of any law for the time being in force, or of any agreement, or appointed by any Government, or any other person to represent its interests.
(v) Women Director: There should be at least one woman as a director on the Board.
(vi) Additional Directors: Any Individual can be appointed as Additional Directors by a company.