Extension and Subgroup

Extension noun - The act of making longer.

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

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

Subgroup noun - A distinct and often subordinate group within a group.

Extension and subgroup are semantically related. Sometimes you can use "Extension" instead a noun "Subgroup".