What are the central ideas in a play?

it depends on what type of play it is but mostly the central idea will be around one or two main characters and the trials that they go through

covert: hidden or secret

candid: truthful and straightforward

what i get from these phrases is covert means undercover or underground and that's where the flower is in april. on the other hand, may is the month where flowers start to bloom and thats the reason why candid is being used as a word to describe the blossoming period of a flower.

hope this answer you.