freak vs irregularity

freak

noun
  • A person who is extremely abnormal in appearance due to a severe medical condition (originally, a freak of nature); later extended to meaning a person who is extremely abnormal in social behavior, sexual orientation, gender identity, and/or business practices; an oddball, especially in physiology (e.g., "circus freak"); a unique person, originally in a displeasing or alienating way. 

  • A drug addict. 

  • An enthusiast, or person who has an obsession with, or extreme knowledge of, something. 

  • A person whose physique has grown far beyond the normal limits of muscular development; often a bodybuilder weighing more than 260 pounds (117.934 kilos). 

  • A very sexually perverse individual. 

  • A man, particularly a bold, strong, vigorous man. 

  • A fellow; a petulant young man. 

  • A hippie. 

verb
  • To react extremely or irrationally, usually under distress or discomposure. 

  • To be placed or place someone under the influence of a psychedelic drug, (especially) to experience reality withdrawal, or hallucinations (nightmarish), to behave irrational or unconventional due to drug use. 

adj
  • Strange, weird, unexpected. 

irregularity

noun
  • An object or event that is not regular or ordinary. 

  • A violation of rules. 

  • An instance of being irregular. 

  • Irregular bowel movement (e.g. diarrhea or constipation). 

  • The state or condition of being irregular, or the extent to which something is irregular. 

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