garlic vs Allium sativum

garlic and Allium sativum both are nouns.

Word	Noun	Adjective	Verb	Adverb
garlic	Yes	No	No	No
Allium sativum	Yes	No	No	No

As nouns, garlic and Allium sativum are synonyms defined as:

garlic and Allium sativum: bulbous herb of southern Europe widely naturalized; bulb breaks up into separate strong-flavored cloves

garlic (noun)	Allium sativum (noun)
aromatic bulb used as seasoning	bulbous herb of southern Europe widely naturalized; bulb breaks up into separate strong-flavored cloves
bulbous herb of southern Europe widely naturalized; bulb breaks up into separate strong-flavored cloves