OKRs = objectives and key results: https://github.com/joelparkerhenderson/objectives-and-key-re...
KPIs = key performance indicators: https://github.com/joelparkerhenderson/key-performance-indic...
It turns out three templates can help greatly:
OKR for growth = Improve {topic} by {percent} during {timeframe}. Measure by {metric}.
OKR for capability = Launch {feature} for {benefit} on {date}. Track progress by {metric}.
OKR for process = Accelerate {queue} from {x} to {y} before {deadline}. Time by {metric}.