sweet pepper plant vs Capsicum annuum grossum

sweet pepper plant and Capsicum annuum grossum both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet pepper plant	Yes	No	No	No
Capsicum annuum grossum	Yes	No	No	No

As nouns, sweet pepper plant and Capsicum annuum grossum are synonyms defined as:

sweet pepper plant and Capsicum annuum grossum: plant bearing large mild thick-walled usually bell-shaped fruits; the principal salad peppers

Other synonyms of sweet pepper plant include bell pepper, paprika, pimento, pimiento, sweet pepper.

sweet pepper plant (noun)	Capsicum annuum grossum (noun)
plant bearing large mild thick-walled usually bell-shaped fruits; the principal salad peppers	plant bearing large mild thick-walled usually bell-shaped fruits; the principal salad peppers