exploding cucumber vs gourd

exploding cucumber and gourd both are nouns.

Word	Noun	Adjective	Verb	Adverb
exploding cucumber	Yes	No	No	No
gourd	Yes	No	No	No

As nouns, gourd is a hypernym of exploding cucumber; that is, gourd is a word with a broader meaning than exploding cucumber:

exploding cucumber: Mediterranean vine having oblong fruit that when ripe expels its seeds and juice violently when touched
gourd: any vine of the family Cucurbitaceae that bears fruits with hard rinds

Other hypernyms of exploding cucumber include gourd vine.

exploding cucumber (noun)	gourd (noun)
Mediterranean vine having oblong fruit that when ripe expels its seeds and juice violently when touched	bottle made from the dried shell of a bottle gourd
	any vine of the family Cucurbitaceae that bears fruits with hard rinds
	any of numerous inedible fruits with hard rinds