alias vs synonym

alias

noun
  • Another name; an assumed name. 

  • A second or further writ which is issued after a first writ has expired without effect. 

  • An spurious signal generated as a technological artifact. 

  • An abbreviation that replaces a string of commands and thereby reduces typing when performing routine actions or tasks. 

adv
  • Otherwise; at another time; in other circumstances; otherwise called. 

  • Used to connect the different names of a person who has gone by two or more, and whose true name is for any cause doubtful 

verb
  • to become indistinguishable 

  • To assign an additional name to an entity, often a more user-friendly one. 

synonym

noun
  • Any of the formal names for a taxon, including the valid name (i.e. the senior synonym). 

  • An alternative (often shorter) name defined for an object in a database. 

  • Any name for a taxon, usually a validly published, formally accepted one, but often also an unpublished name. 

  • A word whose meaning is the same as that of another word. 

  • A word or phrase with a meaning that is the same as, or very similar to, another word or phrase. 

How often have the words alias and synonym occurred in a corpus of books? (source: Google Ngram Viewer )