acute vs lanceolate

acute

adj
  • With the sides meeting directly to form an acute angle (at an apex or base). 

  • Of a triangle: having all three interior angles measuring less than 90 degrees. 

  • Of an accent or tone: generally higher than others. 

  • Intense, sensitive, sharp. 

  • Of a short-lived condition, in contrast to a chronic condition; this sense also does not imply severity. 

  • Of an abnormal condition of recent or sudden onset, in contrast to delayed onset; this sense does not imply severity, unlike the common usage. 

  • Urgent. 

  • Brief, quick, short. 

  • After a letter of the alphabet: having an acute accent. 

  • High or shrill. 

  • Of an angle: less than 90 degrees. 

noun
  • An acute accent (´). 

  • A person who has the acute form of a disorder, such as schizophrenia. 

  • An accent or tone higher than others. 

verb
  • To give an acute sound to. 

lanceolate

adj
  • Of a class of knapped stone points, made without a stem, shoulders, notches, or other features that aid in attachment to a shaft. 

  • Having the general shape of a lance; much longer than wide, with the widest part lower than the middle and a pointed apex. 

noun
  • Any such artefact 

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