According to the internet, the Friar is referring to Juliet's parent that them crying is normal and natural, but since Juliet is in a better place, they should rejoice for the dead and that her soul is still pure when she goes up to heaven because she is young.
Or,
Natures tear meaning natural tears, merriment meaning happy. It is natural to cry over the death of a child but they should be happy she is going to be in a better place.
Apparently.... it determines if you are well educated and have a very good vocabulary-but, in most cases using bigger words have more meaning that basic words do
Sudden Insight. The character has had a realization of something important.
To sludgem you are assess patients with a overdose or poisoning emergency.
