Lactuca sativa vs garden lettuce

Lactuca sativa and garden lettuce both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lactuca sativa	Yes	No	No	No
garden lettuce	Yes	No	No	No

As nouns, Lactuca sativa and garden lettuce are synonyms defined as:

Lactuca sativa and garden lettuce: annual or perennial garden plant having succulent leaves used in salads; widely grown

Other synonyms of Lactuca sativa include common lettuce.

Lactuca sativa (noun)	garden lettuce (noun)
annual or perennial garden plant having succulent leaves used in salads; widely grown	annual or perennial garden plant having succulent leaves used in salads; widely grown