practicality
n.n. the quality of being useful or realistic for a specific purpose. You use this when you want to know if something will actually work in real life.
n. the quality of being suitable for a particular purpose or situation; the state of being realistic and useful. Often used to describe the effectiveness of a plan or the usefulness of an object.
The practicality of the new tool makes it very popular.
While the design is beautiful, the practicality of the chair is questionable because it is too hard to sit on for long periods.
Engineers must balance the aesthetic appeal of the bridge with the practicality of its construction, ensuring that the structure can withstand extreme weather conditions without requiring constant maintenance.
From practical + -ity.