planter vs worker

planter and worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
planter	Yes	No	No	No
worker	Yes	No	No	No

As nouns, worker is a hypernym of planter; that is, worker is a word with a broader meaning than planter:

planter (noun)	worker (noun)
a decorative pot for house plants	sterile member of a colony of social insects that forages for food and cares for the larvae
the owner or manager of a plantation	a person who works at a specific occupation
a worker who puts or sets seeds or seedlings into the ground	a member of the working class (not necessarily employed)
	a person who acts and gets things done