1. domain a collection or group of objects indicated by braces, { } 2. function a relation in which each first coordinate is paired with exactly one second coordinate 3. range the set of second coordinates in a relation 4. relation the set of first coordinates in a relation 5. set a set of ordered pairs

1. domain
the set of first coordinates in a relation 

2. function
a relation in which each first coordinate is paired with exactly one second coordinate

3. range
the set of second coordinates in a relation

4. relation
a set of ordered pairs

5. set
a collection or group of objects indicated by braces, { }