separate vs tack

separate

verb
  • To divide (a thing) into separate parts. 

  • To disunite from a group or mass; to disconnect. 

  • To cause (things or people) to be separate. 

  • To divide itself into separate pieces or substances. 

noun
  • A printing of an article from a periodical as its own distinct publication and distributed independently, often with different page numbers. 

  • Anything that is sold by itself, especially articles of clothing such as blouses, skirts, jackets, and pants. 

adj
  • Apart from (the rest); not connected to or attached to (anything else). 

  • Not together (with); not united (to). 

tack

verb
  • To add something as an extra item. 

  • To nail with a tack (small nail with a flat head). 

  • To maneuver a sailing vessel so that its bow turns through the wind, i.e. the wind changes from one side of the vessel to the other. 

  • To sew/stitch with a tack (loose seam used to temporarily fasten pieces of cloth). 

  • to tack (something) onto (something) 

  • To place the tack on a horse; often paired with "up". 

noun
  • The distance a sailing vessel runs between these maneuvers when working to windward; a board. 

  • A rope used to hold in place the foremost lower corners of the courses when the vessel is close-hauled; also, a rope employed to pull the lower corner of a studding sail to the boom. 

  • Any of the various equipment and accessories worn by horses in the course of their use as domesticated animals. 

  • The maneuver by which a sailing vessel turns its bow through the wind so that the wind changes from one side to the other. 

  • A contract by which the use of a thing is set, or let, for hire; a lease. 

  • The stickiness of a compound, related to its cohesive and adhesive properties. 

  • That which is tacky; something cheap and gaudy. 

  • A small nail with a flat head. 

  • A stain; a tache. 

  • That which is attached; a supplement; an appendix. 

  • A direction or course of action, especially a new one. 

  • A course or heading that enables a sailing vessel to head upwind. 

  • Food generally; fare, especially of the bread kind. 

  • A loose seam used to temporarily fasten pieces of cloth. 

  • A thumbtack. 

  • The lower corner on the leading edge of a sail relative to the direction of the wind. 

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