rocket salad vs garden rocket

rocket salad and garden rocket both are nouns.

Word	Noun	Adjective	Verb	Adverb
rocket salad	Yes	No	No	No
garden rocket	Yes	No	No	No

As nouns, rocket salad and garden rocket are synonyms defined as:

rocket salad and garden rocket: erect European annual often grown as a salad crop to be harvested when young and tender

Other synonyms of rocket salad include arugula, Eruca sativa, Eruca vesicaria sativa, rocket, roquette.

rocket salad (noun)	garden rocket (noun)
erect European annual often grown as a salad crop to be harvested when young and tender	erect European annual often grown as a salad crop to be harvested when young and tender