ravioli vs alimentary paste

ravioli and alimentary paste both are nouns.

Word	Noun	Adjective	Verb	Adverb
ravioli	Yes	No	No	No
alimentary paste	Yes	No	No	No

As nouns, alimentary paste is a hypernym of ravioli; that is, alimentary paste is a word with a broader meaning than ravioli:

ravioli: small circular or square cases of dough with savory fillings
alimentary paste: shaped and dried dough made from flour and water and sometimes egg

Other hypernyms of ravioli include pasta.

ravioli (noun)	alimentary paste (noun)
small circular or square cases of dough with savory fillings	shaped and dried dough made from flour and water and sometimes egg