Proper
What it means
Meaning 1
Correct, suitable, or appropriate for the purpose and circumstances.
Reach for it when stating that something meets the relevant practical or social standard
Proper drainage protected the new path from spring flooding.
Meaning 2
Complete or genuine enough to deserve the name used for it.
Reach for it when emphasizing that something is the real or full version, not a substitute
After weeks of snacks on the road, they sat down to a proper meal.