sugar spoon vs sugar shell

sugar spoon and sugar shell both are nouns.

Word	Noun	Adjective	Verb	Adverb
sugar spoon	Yes	No	No	No
sugar shell	Yes	No	No	No

As nouns, sugar spoon and sugar shell are synonyms defined as:

sugar spoon and sugar shell: a spoon for serving sugar; often made in the shape of a seashell

sugar spoon (noun)	sugar shell (noun)
a spoon for serving sugar; often made in the shape of a seashell	a spoon for serving sugar; often made in the shape of a seashell