Acceptance: A legal instrument deposited with the Director-General of UNESCO, affirming a State’s or regional economic integration organization’s consent to be bound by this Convention.  This Convention shall be subject to ratification, acceptance, approval or accession by Member States of UNESCO in accordance with their respective constitutional procedures.   
Sources: Convention on the Protection and Promotion of the Diversity of Cultural Expressions & Summary of Practice of the Secretary-General as Depository of Multilateral Treaties.
Accession:
A legal instrument deposited with the Director-General of UNESCO, affirming a State’s or regional economic integration organization’s consent to be bound by this Convention. This Convention shall be subject to ratification, acceptance, approval or accession by Member States of UNESCO in accordance with their respective constitutional procedures.    
Sources: Convention on the Protection and Promotion of the Diversity of Cultural Expressions & Summary of Practice of the Secretary-General as Depository of Multilateral Treaties.
Approval:  A legal instrument deposited with the Director-General of UNESCO, affirming a State’s or regional economic integration organization’s consent to be bound by this Convention.  This Convention shall be subject to ratification, acceptance, approval or accession by Member States of UNESCO in accordance with their respective constitutional procedures.     
Sources: Convention on the Protection and Promotion of the Diversity of Cultural Expressions & Summary of Practice of the Secretary-General as Depository of Multilateral Treaties.