What literary device consists of a pair of contradictory words or ideas?

Oxymoron

Explanation:

Oxymoron refers to words or sentences that contradict themselves and it is a speech figure that is used with different purposes like make people think or create an effect of drama. An example is the phrase the same difference. Because of this, the literary device that consists of a pair of contradictory words or ideas is oxymoron.

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.

c. our lives go by quickly, so take time to enjoy each moment.

explanation: