{"era":"current","word":"functionality","meaning":"The quality of being able to perform a specified action","children":[{"era":"1800s","word":"functional","meaning":"designed to be practical and useful","children":[{"era":"1400s","word":"function","meaning":"an activity or purpose natural to a person or thing","children":[{"era":"classical","word":"functio","meaning":"performance, execution","children":[],"language":"Latin"}],"language":"English"}],"language":"English"}],"language":"Modern English"}