acne vs wheal

acne

noun
  • A pattern of blemishes in an area of skin resulting from the skin condition. 

  • A skin condition, usually of the face, that is common in adolescents. It is characterised by red pimples, and is caused by the inflammation of sebaceous glands through bacterial infection. 

wheal

noun
  • A small raised swelling on the skin, often itchy, caused by a blow from a whip or an insect bite etc. 

  • A mine. 

verb
  • Synonym of wale. 

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