loufah sponge vs rag gourd

loufah sponge and rag gourd both are nouns.

Word	Noun	Adjective	Verb	Adverb
loufah sponge	Yes	No	No	No
rag gourd	Yes	No	No	No

loufah sponge (noun)	rag gourd (noun)
the dried fibrous part of the fruit of a plant of the genus Luffa; used as a washing sponge or strainer	any of several tropical annual climbers having large yellow flowers and edible young fruits; grown commercially for the mature fruit's dried fibrous interior that is used as a sponge