Luffa acutangula vs rag gourd

Luffa acutangula and rag gourd both are nouns.

Word	Noun	Adjective	Verb	Adverb
Luffa acutangula	Yes	No	No	No
rag gourd	Yes	No	No	No

As nouns, rag gourd is a hypernym of Luffa acutangula; that is, rag gourd is a word with a broader meaning than Luffa acutangula:

Luffa acutangula: loofah of Pakistan; widely cultivated throughout tropics
rag gourd: 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

Other hypernyms of Luffa acutangula include dishcloth gourd, luffa, sponge gourd, strainer vine.

Luffa acutangula (noun)	rag gourd (noun)
loofah of Pakistan; widely cultivated throughout tropics	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