clustering vs exact

clustering

adj
  • Forming a cluster. 

noun
  • The undesirable contiguous grouping of elements in a hash table. 

  • A grouping of a number of similar things. 

  • A prewriting technique consisting of writing ideas down on a sheet of paper around a central idea within a circle, with the related ideas radially joined to the circle using rays. 

  • The grouping of a population based on ethnicity, economics or religion. 

exact

adj
  • Such that the kernel of one homomorphism is the image of the preceding one. 

  • Habitually careful to agree with a standard, a rule, or a promise; accurate; methodical; punctual. 

  • Precisely agreeing with a standard, a fact, or the truth; perfectly conforming; neither exceeding nor falling short in any respect. 

  • Precisely or definitely conceived or stated; strict. 

adv
  • exactly 

verb
  • To demand and enforce the payment or performance of, sometimes in a forcible or imperious way. 

  • To make desirable or necessary. 

  • To inflict; to forcibly obtain or produce. 

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