Pisum arvense vs Pisum sativum arvense

Pisum arvense and Pisum sativum arvense both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pisum arvense	Yes	No	No	No
Pisum sativum arvense	Yes	No	No	No

As nouns, Pisum arvense and Pisum sativum arvense are synonyms defined as:

Pisum arvense and Pisum sativum arvense: variety of pea plant native to the Mediterranean region and North Africa and widely grown especially for forage

Other synonyms of Pisum arvense include Austrian winter pea, field-pea plant, field pea.

Pisum arvense (noun)	Pisum sativum arvense (noun)
variety of pea plant native to the Mediterranean region and North Africa and widely grown especially for forage	variety of pea plant native to the Mediterranean region and North Africa and widely grown especially for forage