vast

refers to the largest part of a group of people or things

describes a very large physical region or surface

莫大な量

used to refer to a very large quantity of something uncountable

数えられないものの非常に大きな量を指すために使用される

膨大な数

used to refer to a very large quantity of something countable

数えられるものの非常に大きな量を指すために使用される

describes a wide, open area of land, sea, or sky

describes a very large area of land controlled by a country or ruler

refers to a very large number of people gathered together

used to say that the reality is much more serious or extreme than what was said

refers to a very large group of people, often organized