inroad vs offense

inroad

noun
  • Often followed by in, into, or on: initial progress made toward accomplishing a goal or solving a problem. 

  • An advance into enemy territory, an attempted invasion; an encroachment, an incursion. 

offense

noun
  • A strategy and tactics employed when in position to score; contrasted with defense. 

  • An affront, injury, or insult. 

  • The portion of a team dedicated to scoring when in position to do so; contrasted with defense. 

  • A crime or sin. 

  • The state of being offended or displeased; anger; displeasure. 

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