Use of ink while printing pdf

Heloo sir,

i have a small query ... which help my organistaion in saving the ink/economy 

my question is

A word document with 5000 characters using GARAMOND font  and same document conerted to PDF uses the same amount of Ink while printing or not...

in a word aerial font uses a 24% more ink ... 

if a doxument covereted to pdf consumes the ink same as Word document or PDF uses  more ink ?