This is the 11th most frequent Japanese word.
ある
To exist (for inanimate objects); to have.
'ある' is used to indicate the existence of objects or things that are non-living.
部屋に机があります。
There is a desk in the room.
'ある' is used to describe an event or experience that has occurred.
今日はいいことがありました。
Something good happened today.
'ある' is used to indicate possession or availability of items in a location.