robusta coffee vs Coffea canephora

robusta coffee and Coffea canephora both are nouns.

Word	Noun	Adjective	Verb	Adverb
robusta coffee	Yes	No	No	No
Coffea canephora	Yes	No	No	No

As nouns, robusta coffee and Coffea canephora are synonyms defined as:

robusta coffee and Coffea canephora: native to West Africa but grown in Java and elsewhere; resistant to coffee rust

Other synonyms of robusta coffee include Coffea robusta, Rio Nunez coffee.

robusta coffee (noun)	Coffea canephora (noun)
native to West Africa but grown in Java and elsewhere; resistant to coffee rust	native to West Africa but grown in Java and elsewhere; resistant to coffee rust