common garden cress vs pepper grass

common garden cress and pepper grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
common garden cress	Yes	No	No	No
pepper grass	Yes	No	No	No

As nouns, common garden cress and pepper grass are synonyms defined as:

common garden cress and pepper grass: annual herb used as salad green and garnish

Other synonyms of common garden cress include garden pepper cress, Lepidium sativum, pepperwort.

common garden cress (noun)	pepper grass (noun)
annual herb used as salad green and garnish	annual herb used as salad green and garnish