additionary vs plus

additionary

adj
  • Synonym of additional 

plus

adj
  • (Of a quantity) Equal to or greater than; or more; upwards. 

  • Electrically positive. 

  • Being positive rather than negative or zero. 

  • Positive, or involving advantage. 

noun
  • A positive quantity. 

  • A plus sign: +. 

  • An asset or useful addition. 

prep
  • And; sum of the previous one and the following one. 

  • With; having in addition. 

verb
  • To add; to subject to addition. 

  • To increase the potency of a remedy by diluting it in water and stirring. 

  • To provide critical feedback by giving suggestions for improvement rather than criticisms. 

  • To sell additional related items with an original purchase. 

  • To increase in magnitude. 

  • To increase a correction. 

  • To frame in a positive light; to provide a sympathetic interpretation. 

  • To improve. 

conj
  • And also; in addition; besides (which). 

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