Those words which give the measure (quantity) of action are called Adverb of Quantity.

जैसे (For example):-

1. अब में बिल्कुल थक चुका हूँ। Ab mein bilkul thak chuka hoon. (Now, I am surely/totally exhausted.)
2. उतना खाना चाहिए जितना पच सके। Utna khana chahiye jitna pach sake. (We should eat that much which can be digested.)

The underlined words, बिल्कुल (surely) , उतना (that much), जितना ( as much) are adverb of quantity.

These are further divided into 5 types, according to what they tell about the quantity of action as:

1. श्रेणीवाचक (Category) – बारी-बारी से (one by one), कम से (as little), थोडा-थोड़ा (little by little)।