herefore vs in kind

herefore

adv
  • For this reason; on this account; therefore. 

in kind

adv
  • In a reciprocal manner; in a similar way; in the same kind. 

  • With goods or services (as opposed to cash). 

prep
  • In the form of goods and services rather than money. 

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