dryland berry vs blueberry

dryland berry and blueberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
dryland berry	Yes	No	No	No
blueberry	Yes	No	No	No

As nouns, blueberry is a hypernym of dryland berry; that is, blueberry is a word with a broader meaning than dryland berry:

dryland berry: low deciduous shrub of the eastern United States bearing dark blue sweet berries
blueberry: any of numerous shrubs of the genus Vaccinium bearing blueberries

Other hypernyms of dryland berry include blueberry bush.

dryland berry (noun)	blueberry (noun)
low deciduous shrub of the eastern United States bearing dark blue sweet berries	sweet edible dark-blue berries of either low-growing or high-growing blueberry plants
	any of numerous shrubs of the genus Vaccinium bearing blueberries