[Duffy29]

Ok, at this time of night I need to be clear what the diff is between 'purpose' and 'objective'

Plus I need a better way of saying "objective: to get the person to do xyz"
Xyz is stuff like, maintain their yard for fire season, remove their unregistered vehicle from the street .
Basically, take responsibility for it themselves so that we don't have to use enforcement orders.

Fun stuff!

[CallMeProtart]

Vaguely streaming here... would depend on context though? I'm thinking in some situations they are used interchangeably, where in others, you would say someone 'has a purpose' meaning like a goal in mind, versus someone who 'has an objective' which sounds a little like there is something more specific and smaller scale being taked about.
As for the above - could you use 'Aim'?

[galba]

Objective - is the aim, outcome of what you want to do, achievable
Purpose - the reason you are doing it

ie

Objective - reduce the number of deaths from drowning
Install fencing - purpose: to prevent children from accessing pool areas.