fat hen vs Chenopodium bonus-henricus

fat hen and Chenopodium bonus-henricus both are nouns.

Word	Noun	Adjective	Verb	Adverb
fat hen	Yes	No	No	No
Chenopodium bonus-henricus	Yes	No	No	No

As nouns, fat hen and Chenopodium bonus-henricus are synonyms defined as:

fat hen and Chenopodium bonus-henricus: European plant naturalized in North America; often collected from the wild as a potherb

Other synonyms of fat hen include allgood, good-king-henry, wild spinach.

fat hen (noun)	Chenopodium bonus-henricus (noun)
European plant naturalized in North America; often collected from the wild as a potherb	European plant naturalized in North America; often collected from the wild as a potherb