anastylosis vs reassembly

anastylosis and reassembly both are nouns.

Word	Noun	Adjective	Verb	Adverb
anastylosis	Yes	No	No	No
reassembly	Yes	No	No	No

As nouns, reassembly is a hypernym of anastylosis; that is, reassembly is a word with a broader meaning than anastylosis:

anastylosis: the archeological reassembly of ruined monuments from fallen or decayed fragments (incorporating new materials when necessary)
reassembly: assembling again

Other hypernyms of anastylosis include refabrication.

anastylosis (noun)	reassembly (noun)
the archeological reassembly of ruined monuments from fallen or decayed fragments (incorporating new materials when necessary)	assembling again