part of vs several

part of

several

adv
  • By itself; severally. 

adj
  • A number of different; various. 

  • Separable, capable of being treated separately. 

noun
  • Each particular taken singly; an item; a detail; an individual. 

det
  • Consisting of a number more than two but not very many. 

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