ditto vs do likewise

ditto

noun
  • The ditto mark, 〃; a symbol, represented by two apostrophes, inverted commas, or quotation marks (" "), indicating that the item preceding is to be repeated. 

  • That which was stated before, the aforesaid, the above, the same, likewise. 

  • A suit of clothes of the same colour throughout. 

  • A duplicate or copy of a document, particularly one created by a spirit duplicator. 

  • A copy; an imitation. 

intj
  • Used as an expression of agreement with what another person has said, or to indicate that what they have said equally applies to the person being addressed. 

verb
  • To make a copy using a ditto machine. 

  • To repeat the aforesaid, the earlier action etc. 

adv
  • As said before, likewise. 

do likewise

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