Hi,
I reviewed my older post and would like to add these two provisions to the above answer for better clarity. Please check Rule 2(1)(k) of the Companies (Specification of definitions details) Rules, 2014, which specifically provides that the executive directors are whole-time directors as defined in clause (94) of section 2 of the Companies Act 2013. Further, regarding the non-executive directors, Regulation 16(1)(b) of the SEBI (LODR) 2015 says that "independent director" means a non-executive director, other than a nominee director of the listed entity." Thus, as I had said in the earlier post, a non-executive director can be both an independent or a nominee director. Based on Rule 2(1)(k) of the Companies (Specification of definitions details) Rules, 2014, it can also be inferred that a director who is not a whole-time director is a non-executive director. These provisions are directly related to your question and can be relied upon.
Thanks and Regards,
CS Ashutosh Shukla