The nuclear power plant will not become < > until all the safety equipment has been thoroughly testd.
In my thought, both of them are adjectives.
Please let me know the difference of the meaning.
I will be really appreciative of your help.
Both are acceptable in this sentence. There is a slight difference:
Originally Posted by cutemina1211
operational = ready for use > everything is completely tested and ready to go.
operative = functioning > actually working