quintile >> /ˈkwɪntaɪl/
Definition: [noun] Any of five equal groups into which a population can be divided according to the distribution of values of a particular variable.
Example: In 1980, a majority of voters in three out of five income quintiles reported choosing the Democratic candidate, and the fourth quintile was nearly tied.
Definition: [noun] An aspect of 72° (one fifth of a circle).
Example: As it has then gone three fifths around the zodiac or 216°, that is three quintile divisions, in the other direction, it is again pointing towards Earth, and this is within less than one degree!