administer vs be in charge of

administer

verb
  • To give, as an oath. 

  • To apportion out, distribute. 

  • To minister (to). 

  • To manage or supervise the conduct, performance or execution of; to govern or regulate the parameters for the conduct, performance or execution of; to work in an administrative capacity. 

  • To settle, as the estate of one who dies without a will, or whose will fails of an executor. 

  • (medicine) To give (a drug, to a patient), be it orally or by any other means. 

  • (medicine) To cause (a patient, human or animal) to ingest (a drug), either by openly offering or through deceit. 

be in charge of

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