field pea vs pea

field pea and pea both are nouns.

Word	Noun	Adjective	Verb	Adverb
field pea	Yes	No	No	No
pea	Yes	No	No	No

As nouns, pea is a hypernym of field pea; that is, pea is a word with a broader meaning than field pea:

As nouns, pea is a hypernym of field pea; that is, pea is a word with a broader meaning than field pea:

field pea: variety of pea plant native to the Mediterranean region and North Africa and widely grown especially for forage
pea: a leguminous plant of the genus Pisum with small white flowers and long green pods containing edible green seeds

Other hypernyms of field pea include pea plant.

field pea (noun)	pea (noun)
coarse small-seeded pea often used as food when young and tender	seed of a pea plant used for food
variety of pea plant native to the Mediterranean region and North Africa and widely grown especially for forage	a leguminous plant of the genus Pisum with small white flowers and long green pods containing edible green seeds
seed of the field pea plant	the fruit or seed of a pea plant