oyster park vs workplace

oyster park and workplace both are nouns.

Word	Noun	Adjective	Verb	Adverb
oyster park	Yes	No	No	No
workplace	Yes	No	No	No

As nouns, workplace is a hypernym of oyster park; that is, workplace is a word with a broader meaning than oyster park:

Other hypernyms of oyster park include work.

oyster park (noun)	workplace (noun)
a workplace where oysters are bred and grown	a place where work is done