interfere vs play around

interfere

verb
  • To get involved or involve oneself, causing disturbance. 

  • To sexually molest, especially of a child. 

  • (of waves) To be correlated with each other when overlapped or superposed. 

  • To strike one foot against the opposite foot or ankle in using the legs. 

play around

verb
  • To behave in a silly, childish, or irresponsible way. 

  • To work with something in a non-serious manner; to tweak or tinker. 

  • To engage in sexual practices outside of marriage. 

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