Map data structure terminology I'm looking for the correct terminology in regard to map (dictionary) data structure.
When I'm talking about the semantics of the values stored in map in the direction from keys to values, I'd say, for example

messages keys are mapped to message strings

When I'm using the opposite direction - describing the values first, I'd need to say something like

message strings are ??? by message keys (&quot;being mapped by&quot; just doesn't feel right here)
How about &quot;message strings are associated with keys&quot;?