calabash vs Lagenaria siceraria

calabash and Lagenaria siceraria both are nouns.

Word	Noun	Adjective	Verb	Adverb
calabash	Yes	No	No	No
Lagenaria siceraria	Yes	No	No	No

As nouns, calabash and Lagenaria siceraria are synonyms defined as:

calabash and Lagenaria siceraria: Old World climbing plant with hard-shelled bottle-shaped gourds as fruits

Other synonyms of calabash include bottle gourd.

calabash (noun)	Lagenaria siceraria (noun)
bottle made from the dried shell of a bottle gourd	Old World climbing plant with hard-shelled bottle-shaped gourds as fruits
a pipe for smoking; has a curved stem and a large bowl made from a calabash gourd
tropical American evergreen that produces large round gourds
round gourd of the calabash tree
Old World climbing plant with hard-shelled bottle-shaped gourds as fruits