Extension and Windowsill

Extension noun - The act of making longer.

Windowsill and extension are semantically related. In some cases you can use "Windowsill" instead a noun "Extension".

Nearby Words: extend, extended, extent, extensive, extensively

Windowsill noun - The sill of a window; the horizontal member at the bottom of the window frame.

Extension and windowsill are semantically related. Sometimes you can use "Extension" instead a noun "Windowsill".