small is when an shell develops a west over space for contracting
small_unit_operation is military_operation. landing_gear is undercarriage. low_construction_wall is construction_barrier. forming_cleavage_furrow is single_cell_process. small_ship is ship. small_unit_operation is action. rowing_shell is small_watercraft. small_building is building. defilade_fighting_position is concealment_providing_terrain. defilade_fighting_position is cover_providing_terrain.