What is the similarity between transpiration and guttation?

Function or place?

Transpiration is loss of water from the surface of leaves in the form of water vapour while guttation is exudation of water from the surface of leaves in the form of drops. Transpiration takes place through stomata while guttation takes place through hydathodes.

A function is a binary relation over two sets that associates to every element of the first set exactly one element of the second set while place is a specific area or region of the world, a particular city, country. A building or area that is used for a particular purpose. A building, part of a building, or area that is used for shelter.