Metaphysical Conceit

I just looked a little bit more into metaphysical conceit because I didn't really understand it. What I read was that metaphysical conceit goes into great depth comparing two objects that are completely unlike. This concept is different in comparision to Petrarchan conceits which would compare two more closely related objects. The example I read was that a Petrarchan conceit would be comparing a rose and love. A metaphysical conceit is supposed to be a complex logic and should govern the whole poem. The point is to to shock the reader and get them to look at something in a new way.

Apparently the metaphysical conceit in A Valediction: Forbidden Mourning is comparing the union of two lovers to the legs of a compass.

I also looked up cavalier poetry. And I had thought that cavalier poetry was supposed to fit the metaphysical model. But what I read compared the two, and apparently cavalier poetry is supposed to be a more straightforward expression while the metaphysical poets would use metaphors and imagery.

Yeah, I don't know.