cantaloupe vs sweet melon vine

cantaloupe and sweet melon vine both are nouns.

Word	Noun	Adjective	Verb	Adverb
cantaloupe	Yes	No	No	No
sweet melon vine	Yes	No	No	No

As nouns, sweet melon vine is a hypernym of cantaloupe; that is, sweet melon vine is a word with a broader meaning than cantaloupe:

cantaloupe: a variety of muskmelon vine having fruit with a tan rind and orange flesh
sweet melon vine: any of several varieties of vine whose fruit has a netted rind and edible flesh and a musky smell

Other hypernyms of cantaloupe include Cucumis melo, muskmelon, sweet melon.

cantaloupe (noun)	sweet melon vine (noun)
the fruit of a cantaloup vine; small to medium-sized melon with yellowish flesh	any of several varieties of vine whose fruit has a netted rind and edible flesh and a musky smell
a variety of muskmelon vine having fruit with a tan rind and orange flesh