Vase (3)
'vase' is the definition.
(both can mean a container)
This is the entire clue.
(Other definitions for urn that I've seen before include "Ossuary" , "Receptacle for ashes of the dead" , "Tea vessel or ash container" , "Vase for containing ashes" , "Vase; tea vessel" .)
(Other definitions for bud that I've seen before include "American beer" , "It will eventually become a leaf or flower" , "Small pre-flower knob on plant" , "Shoot, sprout" , "Friend" .)