orzo vs alimentary paste

orzo and alimentary paste both are nouns.

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

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

orzo: pasta shaped like pearls of barley; frequently prepared with lamb in Greek cuisine
alimentary paste: shaped and dried dough made from flour and water and sometimes egg

Other hypernyms of orzo include pasta.

orzo (noun)	alimentary paste (noun)
pasta shaped like pearls of barley; frequently prepared with lamb in Greek cuisine	shaped and dried dough made from flour and water and sometimes egg