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.
No it’s not true because potatoes is a consonant and it applies to this word but photos is also a consonant and it does not apply
An idea intended to make the reader take notice and want to read on is called a hook
