https://simple.m.wikipedia.org/wiki/Zipf%27s_law
Example:
In English, 3 most common words:
- “the” : occurring 7% of the time;
- “of” : 3.5% = 7/2
- “and” : 2.8% ~ 7/3
=> “the” is 2x occurs more often than the 2nd “of“, 3x than the 3rd “and” …
Zipf’s Law : the frequency of the nth ranked word is proportional to 1/n.
Reference: