safari park vs parkland

safari park and parkland both are nouns.

Word	Noun	Adjective	Verb	Adverb
safari park	Yes	No	No	No
parkland	Yes	No	No	No

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

safari park: an area of parkland where wild animals are kept and can be viewed by visitors driving through
parkland: a large area of land preserved in its natural state as public property

Other hypernyms of safari park include park.

safari park (noun)	parkland (noun)
an area of parkland where wild animals are kept and can be viewed by visitors driving through	a large area of land preserved in its natural state as public property