prickly pear vs prickly pear

prickly pear and prickly pear both are nouns.

Word	Noun	Adjective	Verb	Adverb
prickly pear	Yes	No	No	No
prickly pear	Yes	No	No	No

prickly pear (noun)	prickly pear (noun)
round or pear-shaped spiny fruit of any of various prickly pear cacti	round or pear-shaped spiny fruit of any of various prickly pear cacti
cacti having spiny flat joints and oval fruit that is edible in some species; often used as food for stock	cacti having spiny flat joints and oval fruit that is edible in some species; often used as food for stock