From — Off

Off

used as a function word to indicate physical separation or distance from a position of rest, attachment, or union <take it ~ the table> <a path ~ the main walk> <a shop just ~ the main street

Основное значение — «с поверхности»

From

used as a function word to indicate a starting point of a physical movement

<came here ~ the city>

Основное значение — «изнутри»