another vs further

another

det
  • Not the same; different. 

  • One more/further, in addition to a former number; a second or additional one, similar in likeness or in effect. 

  • Any or some; any different person, indefinitely; anyone else; someone else. 

pron
  • One of a group of things of the same kind. 

  • An additional one of the same kind. 

  • One that is different from the current one. 

further

adj
  • More distant; relatively distant. 

  • More, additional. 

adv
  • To a greater extent or degree. 

  • Beyond what is already stated or is already the case. 

  • Also; in addition; furthermore; moreover. 

  • Following on (from). 

  • To, at or over a greater distance in space, time or other extent. 

verb
  • To help forward; to assist. 

  • To encourage growth; to support progress or growth of something; to promote. 

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