Day-to-day and Part-time

Day-to-day adjective - Occurring, done, produced, or appearing every day.

Part-time and day-to-day are semantically related. In some cases you can use "Part-time" instead an adjective phrase "Day-to-day".

Part-time adjective - Involving less than the standard or customary time for an activity.

Day-to-day and part-time are semantically related. Sometimes you can use "Day-to-day" instead an adjective phrase "Part-time".