This is the 292nd most frequent Spanish word.
mucha
"Much" or "a lot of" (feminine singular).
In this sentence, 'mucha' modifies the noun 'hambre', indicating a large amount of 'hunger'.
Tengo mucha hambre.
I am very hungry.
Here, 'mucha' modifies 'gente', meaning a large number of people.
Hay mucha gente en la plaza.
There are many people in the square.
In this case, 'mucha' describes 'paciencia', referring to a significant quantity of patience.