field horsetail vs Equisetum arvense

field horsetail and Equisetum arvense both are nouns.

Word	Noun	Adjective	Verb	Adverb
field horsetail	Yes	No	No	No
Equisetum arvense	Yes	No	No	No

As nouns, field horsetail and Equisetum arvense are synonyms defined as:

field horsetail and Equisetum arvense: of Eurasia and Greenland and North America

Other synonyms of field horsetail include common horsetail.

field horsetail (noun)	Equisetum arvense (noun)
of Eurasia and Greenland and North America	of Eurasia and Greenland and North America