you have to call the balls that hit the line or go out when the ref can't see
data is a set of words like a phrase
You set a vollyball when it is above your head.
This is the definition of a circle.
A libretto is the set of lyrics to an opera.
A volley in volleyball is the name of the thing you do when you hit the volleyball upwards in order to set your team mate up for a smash.
a definition is a passage that explains the meaning of a term (a word, phrase or other set of symbols), or a type of thing. The term to be defined is definiendum (plural: definienda). A term may have many different senses or meanings. For each such specific sense, a difiniens (plural: definientia) is a cluster of words that defines that term.
It is called the set.
You set up for spikes.
BUMP-SET-SPIKE
Canada
I set the volleyball to my partner to spike it over the net.