As a noun pollard
is (often|attributive) a tree that has been pruned by cutting its branches back close to the trunk to promote a more bushy growth of foliage.
As a verb pollard
is (horticulture) to prune a tree heavily, cutting branches back to the trunk, so that it produces dense new growth.
As a proper noun collard is
.
collard
English
Noun
(
en noun)
A Mediterranean variety of kale, .
Synonyms
* (Mediterranean kale) (borekale), collard greens