Final answer:
The phrase from 'Romeo and Juliet' uses the idiom 'fool's paradise' to describe a false state of happiness, and it's an example of figurative language.
Step-by-step explanation:
The phrase 'if ye should lead her into a fool's paradise as they say it were a very gross kind behavior' from Romeo and Juliet uses a type of figurative language known as idiom. An idiom is an expression that doesn't exactly mean what the words say but has a culturally understood meaning. In this context, 'fool's paradise' refers to a state of happiness based on false hopes or illusions, hinting that such deceit would be highly inappropriate or unkind. While this phrase holds metaphorical weight, the effect of chopping down Shakespeare's text for modern audiences might lead to the loss of such rich language and subtleties.