spaghetti vs alimentary paste

spaghetti and alimentary paste both are nouns.

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

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

spaghetti: pasta in the form of long strings
alimentary paste: shaped and dried dough made from flour and water and sometimes egg

Other hypernyms of spaghetti include pasta.

spaghetti (noun)	alimentary paste (noun)
pasta in the form of long strings	shaped and dried dough made from flour and water and sometimes egg
spaghetti served with a tomato sauce