pattypan squash vs pattypan squash

pattypan squash and pattypan squash both are nouns.

Word	Noun	Adjective	Verb	Adverb
pattypan squash	Yes	No	No	No
pattypan squash	Yes	No	No	No

pattypan squash (noun)	pattypan squash (noun)
round greenish-white squash having one face flattened with a scalloped edge	round greenish-white squash having one face flattened with a scalloped edge
squash plant having flattened round fruit with a scalloped edge; usually greenish white	squash plant having flattened round fruit with a scalloped edge; usually greenish white