field maple vs Acer campestre

field maple and Acer campestre both are nouns.

Word	Noun	Adjective	Verb	Adverb
field maple	Yes	No	No	No
Acer campestre	Yes	No	No	No

As nouns, field maple and Acer campestre are synonyms defined as:

field maple and Acer campestre: shrubby Eurasian maple often used as a hedge

Other synonyms of field maple include hedge maple.

field maple (noun)	Acer campestre (noun)
shrubby Eurasian maple often used as a hedge	shrubby Eurasian maple often used as a hedge