Open-ended and Open-plan

Open-ended adjective - Without fixed limits or restrictions.

Open-plan and open-ended are semantically related. In some cases you can use "Open-plan" instead an adjective phrase "Open-ended".

Open-plan adjective - (of rooms or buildings) having large rooms with few dividing partitions.

Open-ended and open-plan are semantically related. You can use "Open-ended" instead an adjective phrase "Open-plan".